551056660 has 48 divisors (see below), whose sum is σ = 1442770560. Its totient is φ = 171757440.

The previous prime is 551056657. The next prime is 551056661. The reversal of 551056660 is 66650155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551056661) 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, 177375 + ... + 180454.

It is an arithmetic number, because the mean of its divisors is an integer number (30057720).

Almost surely, 2^551056660 is an apocalyptic number.

It is an amenable number.

551056660 is an abundant number, since it is smaller than the sum of its proper divisors (891713900).

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

551056660 is a wasteful number, since it uses less digits than its factorization.

551056660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357856 (or 357854 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 551056660 is about 23474.5960561625. The cubic root of 551056660 is about 819.8456282869.

The spelling of 551056660 in words is "five hundred fifty-one million, fifty-six thousand, six hundred sixty".