56861979 has 8 divisors (see below), whose sum is σ = 75862080. Its totient is φ = 37884936.

The previous prime is 56861977. The next prime is 56861999. The reversal of 56861979 is 97916865.

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

It is not a de Polignac number, because 56861979 - 2¹ = 56861977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56861971) 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, 1192 + ... + 10730.

It is an arithmetic number, because the mean of its divisors is an integer number (9482760).

Almost surely, 2^56861979 is an apocalyptic number.

56861979 is a deficient number, since it is larger than the sum of its proper divisors (19000101).

56861979 is a wasteful number, since it uses less digits than its factorization.

56861979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529.

The product of its digits is 816480, while the sum is 51.

The square root of 56861979 is about 7540.6882311895. The cubic root of 56861979 is about 384.5392340141.

The spelling of 56861979 in words is "fifty-six million, eight hundred sixty-one thousand, nine hundred seventy-nine".