56626389 has 6 divisors (see below), whose sum is σ = 81793686. Its totient is φ = 37750920.

The previous prime is 56626387. The next prime is 56626411. The reversal of 56626389 is 98362665.

It is a happy number.

56626389 is a `hidden beast` number, since 5 + 6 + 6 + 2 + 638 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43362225 + 13264164 = 6585^2 + 3642^2 .

It is not a de Polignac number, because 56626389 - 2¹ = 56626387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56626387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3145902 + ... + 3145919.

It is an arithmetic number, because the mean of its divisors is an integer number (13632281).

Almost surely, 2^56626389 is an apocalyptic number.

It is an amenable number.

56626389 is a deficient number, since it is larger than the sum of its proper divisors (25167297).

56626389 is a wasteful number, since it uses less digits than its factorization.

56626389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291827 (or 6291824 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 56626389 is about 7525.0507639484. The cubic root of 56626389 is about 384.0074258004.

The spelling of 56626389 in words is "fifty-six million, six hundred twenty-six thousand, three hundred eighty-nine".