57056507 has 2 divisors, whose sum is σ = 57056508. Its totient is φ = 57056506.

The previous prime is 57056501. The next prime is 57056521. The reversal of 57056507 is 70565075.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57056507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57056501) 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, 28528253 + 28528254.

It is an arithmetic number, because the mean of its divisors is an integer number (28528254).

Almost surely, 2^57056507 is an apocalyptic number.

57056507 is a deficient number, since it is larger than the sum of its proper divisors (1).

57056507 is an equidigital number, since it uses as much as digits as its factorization.

57056507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 57056507 is about 7553.5757757502. The cubic root of 57056507 is about 384.9772449586.

The spelling of 57056507 in words is "fifty-seven million, fifty-six thousand, five hundred seven".