56551651 has 8 divisors (see below), whose sum is σ = 62548304. Its totient is φ = 50790240.

The previous prime is 56551613. The next prime is 56551699. The reversal of 56551651 is 15615565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56551651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56551151) 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, 58305 + ... + 59266.

It is an arithmetic number, because the mean of its divisors is an integer number (7818538).

Almost surely, 2^56551651 is an apocalyptic number.

56551651 is a deficient number, since it is larger than the sum of its proper divisors (5996653).

56551651 is a wasteful number, since it uses less digits than its factorization.

56551651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117621.

The product of its digits is 22500, while the sum is 34.

The square root of 56551651 is about 7520.0831777315. The cubic root of 56551651 is about 383.8384081201.

The spelling of 56551651 in words is "fifty-six million, five hundred fifty-one thousand, six hundred fifty-one".