56511251 has 8 divisors (see below), whose sum is σ = 56970000. Its totient is φ = 56054880.

The previous prime is 56511239. The next prime is 56511269. The reversal of 56511251 is 15211565.

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-56511251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56511251.

It is not an unprimeable number, because it can be changed into a prime (56511151) 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, 113000 + ... + 113498.

It is an arithmetic number, because the mean of its divisors is an integer number (7121250).

Almost surely, 2^56511251 is an apocalyptic number.

56511251 is a deficient number, since it is larger than the sum of its proper divisors (458749).

56511251 is a wasteful number, since it uses less digits than its factorization.

56511251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189.

The product of its digits is 1500, while the sum is 26.

The square root of 56511251 is about 7517.3965573196. The cubic root of 56511251 is about 383.7469827559.

The spelling of 56511251 in words is "fifty-six million, five hundred eleven thousand, two hundred fifty-one".