56889813 has 8 divisors (see below), whose sum is σ = 75888000. Its totient is φ = 37909088.

The previous prime is 56889809. The next prime is 56889841. The reversal of 56889813 is 31898865.

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

It is a cyclic number.

It is not a de Polignac number, because 56889813 - 2² = 56889809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56889853) 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, 9913 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (9486000).

Almost surely, 2^56889813 is an apocalyptic number.

It is an amenable number.

56889813 is a deficient number, since it is larger than the sum of its proper divisors (18998187).

56889813 is a wasteful number, since it uses less digits than its factorization.

56889813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731.

The product of its digits is 414720, while the sum is 48.

The square root of 56889813 is about 7542.5335928983. The cubic root of 56889813 is about 384.6019679022.

The spelling of 56889813 in words is "fifty-six million, eight hundred eighty-nine thousand, eight hundred thirteen".