57456431 has 2 divisors, whose sum is σ = 57456432. Its totient is φ = 57456430.

The previous prime is 57456397. The next prime is 57456433. The reversal of 57456431 is 13465475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57456431 - 2⁶ = 57456367 is a prime.

It is a super-2 number, since 2×57456431² = 6602482926515522, which contains 22 as substring.

Together with 57456433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57456391 and 57456400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57456433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28728215 + 28728216.

It is an arithmetic number, because the mean of its divisors is an integer number (28728216).

Almost surely, 2^57456431 is an apocalyptic number.

57456431 is a deficient number, since it is larger than the sum of its proper divisors (1).

57456431 is an equidigital number, since it uses as much as digits as its factorization.

57456431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 57456431 is about 7580.0020448546. The cubic root of 57456431 is about 385.8746203436.

The spelling of 57456431 in words is "fifty-seven million, four hundred fifty-six thousand, four hundred thirty-one".