56218994 has 16 divisors (see below), whose sum is σ = 93948120. Its totient is φ = 25052160.

The previous prime is 56218993. The next prime is 56219011. The reversal of 56218994 is 49981265.

It can be written as a sum of positive squares in 4 ways, for example, as 41434969 + 14784025 = 6437^2 + 3845^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56218991) 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, 36527 + ... + 38034.

Almost surely, 2^56218994 is an apocalyptic number.

56218994 is a deficient number, since it is larger than the sum of its proper divisors (37729126).

56218994 is a wasteful number, since it uses less digits than its factorization.

56218994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74605.

The product of its digits is 155520, while the sum is 44.

The square root of 56218994 is about 7497.9326484038. The cubic root of 56218994 is about 383.0843026937.

The spelling of 56218994 in words is "fifty-six million, two hundred eighteen thousand, nine hundred ninety-four".