56551099 has 16 divisors (see below), whose sum is σ = 63995904. Its totient is φ = 49507200.

The previous prime is 56551091. The next prime is 56551109. The reversal of 56551099 is 99015565.

It is a cyclic number.

It is not a de Polignac number, because 56551099 - 2³ = 56551091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56551091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130387 + ... + 130819.

It is an arithmetic number, because the mean of its divisors is an integer number (3999744).

Almost surely, 2^56551099 is an apocalyptic number.

56551099 is a deficient number, since it is larger than the sum of its proper divisors (7444805).

56551099 is a wasteful number, since it uses less digits than its factorization.

56551099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 56551099 is about 7520.0464759202. The cubic root of 56551099 is about 383.8371592353.

It can be divided in two parts, 56 and 551099, that added together give a palindrome (551155).

The spelling of 56551099 in words is "fifty-six million, five hundred fifty-one thousand, ninety-nine".