57040531 has 4 divisors (see below), whose sum is σ = 57056832. Its totient is φ = 57024232.

The previous prime is 57040513. The next prime is 57040537. The reversal of 57040531 is 13504075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57040531 - 2⁵ = 57040499 is a prime.

It is a super-2 number, since 2×57040531² = 6507244353523922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57040496 and 57040505.

It is not an unprimeable number, because it can be changed into a prime (57040537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (14264208).

Almost surely, 2^57040531 is an apocalyptic number.

57040531 is a deficient number, since it is larger than the sum of its proper divisors (16301).

57040531 is a wasteful number, since it uses less digits than its factorization.

57040531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16300.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 57040531 is about 7552.5181893194. The cubic root of 57040531 is about 384.9413099945.

The spelling of 57040531 in words is "fifty-seven million, forty thousand, five hundred thirty-one".