57245431 has 2 divisors, whose sum is σ = 57245432. Its totient is φ = 57245430.

The previous prime is 57245407. The next prime is 57245479. The reversal of 57245431 is 13454275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57245431 - 2⁷ = 57245303 is a prime.

It is a super-2 number, since 2×57245431² = 6554078740751522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57245393 and 57245402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57245491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28622715 + 28622716.

It is an arithmetic number, because the mean of its divisors is an integer number (28622716).

Almost surely, 2^57245431 is an apocalyptic number.

57245431 is a deficient number, since it is larger than the sum of its proper divisors (1).

57245431 is an equidigital number, since it uses as much as digits as its factorization.

57245431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 57245431 is about 7566.0710411679. The cubic root of 57245431 is about 385.4016856678.

The spelling of 57245431 in words is "fifty-seven million, two hundred forty-five thousand, four hundred thirty-one".