57628631 has 2 divisors, whose sum is σ = 57628632. Its totient is φ = 57628630.

The previous prime is 57628567. The next prime is 57628651. The reversal of 57628631 is 13682675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57628631 - 2⁶ = 57628567 is a prime.

It is a super-2 number, since 2×57628631² = 6642118221868322, 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 (57628651) 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, 28814315 + 28814316.

It is an arithmetic number, because the mean of its divisors is an integer number (28814316).

Almost surely, 2^57628631 is an apocalyptic number.

57628631 is a deficient number, since it is larger than the sum of its proper divisors (1).

57628631 is an equidigital number, since it uses as much as digits as its factorization.

57628631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 57628631 is about 7591.3523828103. The cubic root of 57628631 is about 386.2597314990.

The spelling of 57628631 in words is "fifty-seven million, six hundred twenty-eight thousand, six hundred thirty-one".