56418729 has 8 divisors (see below), whose sum is σ = 77651712. Its totient is φ = 36399120.

The previous prime is 56418683. The next prime is 56418751. The reversal of 56418729 is 92781465.

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

It is not a de Polignac number, because 56418729 - 2⁹ = 56418217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56416729) 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, 303234 + ... + 303419.

It is an arithmetic number, because the mean of its divisors is an integer number (9706464).

Almost surely, 2^56418729 is an apocalyptic number.

It is an amenable number.

56418729 is a deficient number, since it is larger than the sum of its proper divisors (21232983).

56418729 is a wasteful number, since it uses less digits than its factorization.

56418729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606687.

The product of its digits is 120960, while the sum is 42.

The square root of 56418729 is about 7511.2401772277. The cubic root of 56418729 is about 383.5374408092.

The spelling of 56418729 in words is "fifty-six million, four hundred eighteen thousand, seven hundred twenty-nine".