551045660 has 24 divisors (see below), whose sum is σ = 1262396016. Its totient is φ = 200380160.

The previous prime is 551045653. The next prime is 551045681. The reversal of 551045660 is 66540155.

551045660 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252157 + ... + 1252596.

It is an arithmetic number, because the mean of its divisors is an integer number (52599834).

Almost surely, 2^551045660 is an apocalyptic number.

It is an amenable number.

551045660 is an abundant number, since it is smaller than the sum of its proper divisors (711350356).

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

551045660 is a wasteful number, since it uses less digits than its factorization.

551045660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504773 (or 2504771 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 551045660 is about 23474.3617591618. The cubic root of 551045660 is about 819.8401730935.

The spelling of 551045660 in words is "five hundred fifty-one million, forty-five thousand, six hundred sixty".