551857980 has 24 divisors (see below), whose sum is σ = 1545202512. Its totient is φ = 147162112.

The previous prime is 551857979. The next prime is 551858011. The reversal of 551857980 is 89758155.

551857980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 4598757 + ... + 4598876.

It is an arithmetic number, because the mean of its divisors is an integer number (64383438).

Almost surely, 2^551857980 is an apocalyptic number.

It is an amenable number.

551857980 is an abundant number, since it is smaller than the sum of its proper divisors (993344532).

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

551857980 is a wasteful number, since it uses less digits than its factorization.

551857980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197645 (or 9197643 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 48.

The square root of 551857980 is about 23491.6576682021. The cubic root of 551857980 is about 820.2428291341.

The spelling of 551857980 in words is "five hundred fifty-one million, eight hundred fifty-seven thousand, nine hundred eighty".