56981774 has 4 divisors (see below), whose sum is σ = 85472664. Its totient is φ = 28490886.

The previous prime is 56981713. The next prime is 56981791. The reversal of 56981774 is 47718965.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14245442 + ... + 14245445.

It is an arithmetic number, because the mean of its divisors is an integer number (21368166).

Almost surely, 2^56981774 is an apocalyptic number.

56981774 is a deficient number, since it is larger than the sum of its proper divisors (28490890).

56981774 is a wasteful number, since it uses less digits than its factorization.

56981774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490889.

The product of its digits is 423360, while the sum is 47.

The square root of 56981774 is about 7548.6272924287. The cubic root of 56981774 is about 384.8090895843.

The spelling of 56981774 in words is "fifty-six million, nine hundred eighty-one thousand, seven hundred seventy-four".