56631671 has 2 divisors, whose sum is σ = 56631672. Its totient is φ = 56631670.

The previous prime is 56631667. The next prime is 56631697. The reversal of 56631671 is 17613665.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56631671 - 2² = 56631667 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56631611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28315835 + 28315836.

It is an arithmetic number, because the mean of its divisors is an integer number (28315836).

Almost surely, 2^56631671 is an apocalyptic number.

56631671 is a deficient number, since it is larger than the sum of its proper divisors (1).

56631671 is an equidigital number, since it uses as much as digits as its factorization.

56631671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 56631671 is about 7525.4017168521. The cubic root of 56631671 is about 384.0193652524.

The spelling of 56631671 in words is "fifty-six million, six hundred thirty-one thousand, six hundred seventy-one".