• 151 can be written using four 4's:
151 has 2 divisors, whose sum is σ = 152. Its totient is φ = 150.
The previous prime is 149. The next prime is 157.
151 is nontrivially palindromic in base 3 and base 10.
151 is an esthetic number in base 3 and base 14, because in such bases its adjacent digits differ by 1.
It is a weak prime.
It is a palprime.
It is a cyclic number.
It is not a de Polignac number, because 151 - 21 = 149 is a prime.
Together with 149, it forms a pair of twin primes.
151 is an undulating number in base 3 and base 10.
151 is a lucky number.
It is a plaindrome in base 8, base 9, base 11 and base 14.
It is a nialpdrome in base 6, base 13, base 15 and base 16.
It is a congruent number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75 + 76.
It is an arithmetic number, because the mean of its divisors is an integer number (76).
151 is the 6-th centered decagonal number.
151 is a deficient number, since it is larger than the sum of its proper divisors (1).
151 is an equidigital number, since it uses as much as digits as its factorization.
151 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 5, while the sum is 7.
The square root of 151 is about 12.2882057274. The cubic root of 151 is about 5.3250740216.
It can be divided in two parts, 15 and 1, that added together give a 4-th power (16 = 24).
The spelling of 151 in words is "one hundred fifty-one", and thus it is an aban number.
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