56791816 has 8 divisors (see below), whose sum is σ = 106484670. Its totient is φ = 28395904.

The previous prime is 56791799. The next prime is 56791841. The reversal of 56791816 is 61819765.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35354916 + 21436900 = 5946^2 + 4630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3549481 + ... + 3549496.

Almost surely, 2^56791816 is an apocalyptic number.

It is an amenable number.

56791816 is a deficient number, since it is larger than the sum of its proper divisors (49692854).

56791816 is a wasteful number, since it uses less digits than its factorization.

56791816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098983 (or 7098979 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 56791816 is about 7536.0345009826. The cubic root of 56791816 is about 384.3810056655.

The spelling of 56791816 in words is "fifty-six million, seven hundred ninety-one thousand, eight hundred sixteen".