56650551 has 4 divisors (see below), whose sum is σ = 75534072. Its totient is φ = 37767032.

The previous prime is 56650523. The next prime is 56650553. The reversal of 56650551 is 15505665.

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

It is a cyclic number.

It is not a de Polignac number, because 56650551 - 2¹¹ = 56648503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56650553) 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, 9441756 + ... + 9441761.

It is an arithmetic number, because the mean of its divisors is an integer number (18883518).

Almost surely, 2^56650551 is an apocalyptic number.

56650551 is a deficient number, since it is larger than the sum of its proper divisors (18883521).

56650551 is a wasteful number, since it uses less digits than its factorization.

56650551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18883520.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 56650551 is about 7526.6560304029. The cubic root of 56650551 is about 384.0620356047.

The spelling of 56650551 in words is "fifty-six million, six hundred fifty thousand, five hundred fifty-one".