56123979 has 32 divisors (see below), whose sum is σ = 80870400. Its totient is φ = 34539648.

The previous prime is 56123959. The next prime is 56123989. The reversal of 56123979 is 97932165.

It is not a de Polignac number, because 56123979 - 2⁹ = 56123467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56123979.

It is not an unprimeable number, because it can be changed into a prime (56123939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376597 + ... + 376745.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^56123979 is an apocalyptic number.

56123979 is a deficient number, since it is larger than the sum of its proper divisors (24746421).

56123979 is a wasteful number, since it uses less digits than its factorization.

56123979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its digits is 102060, while the sum is 42.

The square root of 56123979 is about 7491.5938891534. The cubic root of 56123979 is about 382.8683657100.

It can be divided in two parts, 5612 and 3979, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 56123979 in words is "fifty-six million, one hundred twenty-three thousand, nine hundred seventy-nine".