2051543 has 8 divisors (see below), whose sum is σ = 2339568. Its totient is φ = 1782144.

The previous prime is 2051537. The next prime is 2051587. The reversal of 2051543 is 3451502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2051543 - 2⁶ = 2051479 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421 + ... + 4862.

It is an arithmetic number, because the mean of its divisors is an integer number (292446).

2^2051543 is an apocalyptic number.

2051543 is a deficient number, since it is larger than the sum of its proper divisors (288025).

2051543 is a wasteful number, since it uses less digits than its factorization.

2051543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2051543 is about 1432.3208439452. The cubic root of 2051543 is about 127.0652732435.

The spelling of 2051543 in words is "two million, fifty-one thousand, five hundred forty-three".