56376989 has 2 divisors, whose sum is σ = 56376990. Its totient is φ = 56376988.

The previous prime is 56376977. The next prime is 56377019. The reversal of 56376989 is 98967365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 13579225 = 6542^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 56376989 - 2²⁴ = 39599773 is a prime.

It is a super-2 number, since 2×56376989² = 6356729777412242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56376989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56376389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28188494 + 28188495.

It is an arithmetic number, because the mean of its divisors is an integer number (28188495).

Almost surely, 2^56376989 is an apocalyptic number.

It is an amenable number.

56376989 is a deficient number, since it is larger than the sum of its proper divisors (1).

56376989 is an equidigital number, since it uses as much as digits as its factorization.

56376989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 56376989 is about 7508.4611605841. The cubic root of 56376989 is about 383.4428339142.

The spelling of 56376989 in words is "fifty-six million, three hundred seventy-six thousand, nine hundred eighty-nine".