57442531 has 2 divisors, whose sum is σ = 57442532. Its totient is φ = 57442530.

The previous prime is 57442519. The next prime is 57442543. The reversal of 57442531 is 13524475.

It is a balanced prime because it is at equal distance from previous prime (57442519) and next prime (57442543).

It is a cyclic number.

It is not a de Polignac number, because 57442531 - 2⁵ = 57442499 is a prime.

It is a super-2 number, since 2×57442531² = 6599288735371922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57442493 and 57442502.

It is not a weakly prime, because it can be changed into another prime (57442501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28721265 + 28721266.

It is an arithmetic number, because the mean of its divisors is an integer number (28721266).

Almost surely, 2^57442531 is an apocalyptic number.

57442531 is a deficient number, since it is larger than the sum of its proper divisors (1).

57442531 is an equidigital number, since it uses as much as digits as its factorization.

57442531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 57442531 is about 7579.0851030979. The cubic root of 57442531 is about 385.8435005907.

The spelling of 57442531 in words is "fifty-seven million, four hundred forty-two thousand, five hundred thirty-one".