551992 has 16 divisors (see below), whose sum is σ = 1182960. Its totient is φ = 236544.

The previous prime is 551981. The next prime is 552001. The reversal of 551992 is 299155.

It is an Ulam number.

It is a congruent number.

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, 4873 + ... + 4984.

It is an arithmetic number, because the mean of its divisors is an integer number (73935).

2⁵⁵¹⁹⁹² is an apocalyptic number.

It is an amenable number.

551992 is an abundant number, since it is smaller than the sum of its proper divisors (630968).

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

551992 is a wasteful number, since it uses less digits than its factorization.

551992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870 (or 9866 counting only the distinct ones).

The product of its digits is 4050, while the sum is 31.

The square root of 551992 is about 742.9616410017. The cubic root of 551992 is about 82.0309223056.

The spelling of 551992 in words is "five hundred fifty-one thousand, nine hundred ninety-two".