56367978 has 16 divisors (see below), whose sum is σ = 112940256. Its totient is φ = 18755280.

The previous prime is 56367977. The next prime is 56367979. The reversal of 56367978 is 87976365.

It is an interprime number because it is at equal distance from previous prime (56367977) and next prime (56367979).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56367978.

It is not an unprimeable number, because it can be changed into a prime (56367977) 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, 4801 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (7058766).

Almost surely, 2^56367978 is an apocalyptic number.

56367978 is an abundant number, since it is smaller than the sum of its proper divisors (56572278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56367978 is a wasteful number, since it uses less digits than its factorization.

56367978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17029.

The product of its digits is 1905120, while the sum is 51.

The square root of 56367978 is about 7507.8610802278. The cubic root of 56367978 is about 383.4224036669.

The spelling of 56367978 in words is "fifty-six million, three hundred sixty-seven thousand, nine hundred seventy-eight".