551631880 has 16 divisors (see below), whose sum is σ = 1241171820. Its totient is φ = 220652736.

The previous prime is 551631869. The next prime is 551631923. The reversal of 551631880 is 88136155.

It can be written as a sum of positive squares in 2 ways, for example, as 525601476 + 26030404 = 22926^2 + 5102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6895359 + ... + 6895438.

Almost surely, 2^551631880 is an apocalyptic number.

It is an amenable number.

551631880 is an abundant number, since it is smaller than the sum of its proper divisors (689539940).

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

551631880 is a wasteful number, since it uses less digits than its factorization.

551631880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13790808 (or 13790804 counting only the distinct ones).

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

The square root of 551631880 is about 23486.8448285418. The cubic root of 551631880 is about 820.1307941276.

The spelling of 551631880 in words is "five hundred fifty-one million, six hundred thirty-one thousand, eight hundred eighty".