56638577 has 8 divisors (see below), whose sum is σ = 60036552. Its totient is φ = 53248000.

The previous prime is 56638559. The next prime is 56638597. The reversal of 56638577 is 77583665.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31798321 + 24840256 = 5639^2 + 4984^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56638577 - 2⁶ = 56638513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56638597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26177 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (7504569).

Almost surely, 2^56638577 is an apocalyptic number.

It is an amenable number.

56638577 is a deficient number, since it is larger than the sum of its proper divisors (3397975).

56638577 is a wasteful number, since it uses less digits than its factorization.

56638577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699.

The product of its digits is 1058400, while the sum is 47.

The square root of 56638577 is about 7525.8605488010. The cubic root of 56638577 is about 384.0349744801.

The spelling of 56638577 in words is "fifty-six million, six hundred thirty-eight thousand, five hundred seventy-seven".