56980138 has 4 divisors (see below), whose sum is σ = 85470210. Its totient is φ = 28490068.

The previous prime is 56980123. The next prime is 56980151. The reversal of 56980138 is 83108965.

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., 45603009 + 11377129 = 6753^2 + 3373^2 .

It is a super-2 number, since 2×56980138² = 6493472252998088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 56980138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14245033 + ... + 14245036.

Almost surely, 2^56980138 is an apocalyptic number.

56980138 is a deficient number, since it is larger than the sum of its proper divisors (28490072).

56980138 is a wasteful number, since it uses less digits than its factorization.

56980138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490071.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 56980138 is about 7548.5189275778. The cubic root of 56980138 is about 384.8054068062.

The spelling of 56980138 in words is "fifty-six million, nine hundred eighty thousand, one hundred thirty-eight".