56218538 has 8 divisors (see below), whose sum is σ = 84368640. Its totient is φ = 28095660.

The previous prime is 56218457. The next prime is 56218543. The reversal of 56218538 is 83581265.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (10546080).

Almost surely, 2^56218538 is an apocalyptic number.

56218538 is a deficient number, since it is larger than the sum of its proper divisors (28150102).

56218538 is a wasteful number, since it uses less digits than its factorization.

56218538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13612.

The product of its digits is 57600, while the sum is 38.

The square root of 56218538 is about 7497.9022399602. The cubic root of 56218538 is about 383.0832669411.

The spelling of 56218538 in words is "fifty-six million, two hundred eighteen thousand, five hundred thirty-eight".