56771331 has 4 divisors (see below), whose sum is σ = 75695112. Its totient is φ = 37847552.

The previous prime is 56771327. The next prime is 56771333. The reversal of 56771331 is 13317765.

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

It is a cyclic number.

It is not a de Polignac number, because 56771331 - 2² = 56771327 is a prime.

It is a super-2 number, since 2×56771331² = 6445968047023122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56771292 and 56771301.

It is not an unprimeable number, because it can be changed into a prime (56771333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9461886 + ... + 9461891.

It is an arithmetic number, because the mean of its divisors is an integer number (18923778).

Almost surely, 2^56771331 is an apocalyptic number.

56771331 is a deficient number, since it is larger than the sum of its proper divisors (18923781).

56771331 is a wasteful number, since it uses less digits than its factorization.

56771331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18923780.

The product of its digits is 13230, while the sum is 33.

The square root of 56771331 is about 7534.6752418402. The cubic root of 56771331 is about 384.3347842650.

The spelling of 56771331 in words is "fifty-six million, seven hundred seventy-one thousand, three hundred thirty-one".