56978805 has 32 divisors (see below), whose sum is σ = 100283904. Its totient is φ = 27449856.

The previous prime is 56978783. The next prime is 56978809. The reversal of 56978805 is 50887965.

It is not a de Polignac number, because 56978805 - 2⁹ = 56978293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56978809) 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, 6057 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (3133872).

Almost surely, 2^56978805 is an apocalyptic number.

It is an amenable number.

56978805 is a deficient number, since it is larger than the sum of its proper divisors (43305099).

56978805 is a wasteful number, since it uses less digits than its factorization.

56978805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 56978805 is about 7548.4306315949. The cubic root of 56978805 is about 384.8024060553.

The spelling of 56978805 in words is "fifty-six million, nine hundred seventy-eight thousand, eight hundred five".