57282431 has 2 divisors, whose sum is σ = 57282432. Its totient is φ = 57282430.

The previous prime is 57282427. The next prime is 57282457. The reversal of 57282431 is 13428275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57282431 - 2² = 57282427 is a prime.

It is a super-2 number, since 2×57282431² = 6562553802539522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57282481) 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, 28641215 + 28641216.

It is an arithmetic number, because the mean of its divisors is an integer number (28641216).

Almost surely, 2^57282431 is an apocalyptic number.

57282431 is a deficient number, since it is larger than the sum of its proper divisors (1).

57282431 is an equidigital number, since it uses as much as digits as its factorization.

57282431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 57282431 is about 7568.5157725937. The cubic root of 57282431 is about 385.4847012668.

The spelling of 57282431 in words is "fifty-seven million, two hundred eighty-two thousand, four hundred thirty-one".