56771844 has 12 divisors (see below), whose sum is σ = 132467664. Its totient is φ = 18923944.

The previous prime is 56771783. The next prime is 56771861. The reversal of 56771844 is 44817765.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 56771796 and 56771805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365482 + ... + 2365505.

It is an arithmetic number, because the mean of its divisors is an integer number (11038972).

Almost surely, 2^56771844 is an apocalyptic number.

It is an amenable number.

56771844 is an abundant number, since it is smaller than the sum of its proper divisors (75695820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56771844 is a wasteful number, since it uses less digits than its factorization.

56771844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730994 (or 4730992 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 56771844 is about 7534.7092843719. The cubic root of 56771844 is about 384.3359419100.

The spelling of 56771844 in words is "fifty-six million, seven hundred seventy-one thousand, eight hundred forty-four".