57043531 has 2 divisors, whose sum is σ = 57043532. Its totient is φ = 57043530.

The previous prime is 57043523. The next prime is 57043537. The reversal of 57043531 is 13534075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57043531 - 2³ = 57043523 is a prime.

It is a super-2 number, since 2×57043531² = 6507928857895922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57043531.

It is not a weakly prime, because it can be changed into another prime (57043537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521765 + 28521766.

It is an arithmetic number, because the mean of its divisors is an integer number (28521766).

Almost surely, 2^57043531 is an apocalyptic number.

57043531 is a deficient number, since it is larger than the sum of its proper divisors (1).

57043531 is an equidigital number, since it uses as much as digits as its factorization.

57043531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 57043531 is about 7552.7167959616. The cubic root of 57043531 is about 384.9480584338.

The spelling of 57043531 in words is "fifty-seven million, forty-three thousand, five hundred thirty-one".