551613880 has 16 divisors (see below), whose sum is σ = 1241131320. Its totient is φ = 220645536.

The previous prime is 551613857. The next prime is 551613889. The reversal of 551613880 is 88316155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551613889) 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, 6895134 + ... + 6895213.

Almost surely, 2^551613880 is an apocalyptic number.

It is an amenable number.

551613880 is an abundant number, since it is smaller than the sum of its proper divisors (689517440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551613880 is a wasteful number, since it uses less digits than its factorization.

551613880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13790358 (or 13790354 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 551613880 is about 23486.4616321829. The cubic root of 551613880 is about 820.1218736166.

The spelling of 551613880 in words is "five hundred fifty-one million, six hundred thirteen thousand, eight hundred eighty".