551855960 has 32 divisors (see below), whose sum is σ = 1243198800. Its totient is φ = 220471680.

The previous prime is 551855957. The next prime is 551855977. The reversal of 551855960 is 69558155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26330 + ... + 42390.

Almost surely, 2^551855960 is an apocalyptic number.

It is an amenable number.

551855960 is an abundant number, since it is smaller than the sum of its proper divisors (691342840).

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

551855960 is a wasteful number, since it uses less digits than its factorization.

551855960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16931 (or 16927 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 44.

The square root of 551855960 is about 23491.6146741768. The cubic root of 551855960 is about 820.2418283377.

The spelling of 551855960 in words is "five hundred fifty-one million, eight hundred fifty-five thousand, nine hundred sixty".