56007551 has 4 divisors (see below), whose sum is σ = 56037912. Its totient is φ = 55977192.

The previous prime is 56007493. The next prime is 56007559. The reversal of 56007551 is 15570065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56007551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56007559) 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, 12221 + ... + 16166.

It is an arithmetic number, because the mean of its divisors is an integer number (14009478).

Almost surely, 2^56007551 is an apocalyptic number.

56007551 is a deficient number, since it is larger than the sum of its proper divisors (30361).

56007551 is a wasteful number, since it uses less digits than its factorization.

56007551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30360.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 56007551 is about 7483.8192789511. The cubic root of 56007551 is about 382.6034316666.

The spelling of 56007551 in words is "fifty-six million, seven thousand, five hundred fifty-one".