56515478 has 8 divisors (see below), whose sum is σ = 84842472. Its totient is φ = 28234656.

The previous prime is 56515471. The next prime is 56515483. The reversal of 56515478 is 87451565.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300 + ... + 13487.

It is an arithmetic number, because the mean of its divisors is an integer number (10605309).

Almost surely, 2^56515478 is an apocalyptic number.

56515478 is a deficient number, since it is larger than the sum of its proper divisors (28326994).

56515478 is a wasteful number, since it uses less digits than its factorization.

56515478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086.

The product of its digits is 168000, while the sum is 41.

The square root of 56515478 is about 7517.6776999283. The cubic root of 56515478 is about 383.7565505147.

The spelling of 56515478 in words is "fifty-six million, five hundred fifteen thousand, four hundred seventy-eight".