56772861 has 8 divisors (see below), whose sum is σ = 75737184. Its totient is φ = 37828560.

The previous prime is 56772841. The next prime is 56772869. The reversal of 56772861 is 16827765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56772861 - 2⁷ = 56772733 is a prime.

It is a super-2 number, since 2×56772861² = 6446315492250642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56772869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (9467148).

Almost surely, 2^56772861 is an apocalyptic number.

It is an amenable number.

56772861 is a deficient number, since it is larger than the sum of its proper divisors (18964323).

56772861 is a wasteful number, since it uses less digits than its factorization.

56772861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011.

The product of its digits is 141120, while the sum is 42.

The square root of 56772861 is about 7534.7767717431. The cubic root of 56772861 is about 384.3382368700.

The spelling of 56772861 in words is "fifty-six million, seven hundred seventy-two thousand, eight hundred sixty-one".