56566738 has 4 divisors (see below), whose sum is σ = 84850110. Its totient is φ = 28283368.

The previous prime is 56566681. The next prime is 56566739. The reversal of 56566738 is 83766565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44849809 + 11716929 = 6697^2 + 3423^2 .

It is not an unprimeable number, because it can be changed into a prime (56566739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14141683 + ... + 14141686.

Almost surely, 2^56566738 is an apocalyptic number.

56566738 is a deficient number, since it is larger than the sum of its proper divisors (28283372).

56566738 is a wasteful number, since it uses less digits than its factorization.

56566738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28283371.

The product of its digits is 907200, while the sum is 46.

The square root of 56566738 is about 7521.0862247417. The cubic root of 56566738 is about 383.8725388959.

The spelling of 56566738 in words is "fifty-six million, five hundred sixty-six thousand, seven hundred thirty-eight".