551323660 has 24 divisors (see below), whose sum is σ = 1158335136. Its totient is φ = 220423680.

The previous prime is 551323657. The next prime is 551323681. The reversal of 551323660 is 66323155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46545 + ... + 57175.

It is an arithmetic number, because the mean of its divisors is an integer number (48263964).

Almost surely, 2^551323660 is an apocalyptic number.

It is an amenable number.

551323660 is an abundant number, since it is smaller than the sum of its proper divisors (607011476).

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

551323660 is a wasteful number, since it uses less digits than its factorization.

551323660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13233 (or 13231 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 551323660 is about 23480.2823662749. The cubic root of 551323660 is about 819.9780184470.

The spelling of 551323660 in words is "five hundred fifty-one million, three hundred twenty-three thousand, six hundred sixty".