551440860 has 24 divisors (see below), whose sum is σ = 1544034576. Its totient is φ = 147050880.

The previous prime is 551440853. The next prime is 551440861. The reversal of 551440860 is 68044155.

551440860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551440861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4595281 + ... + 4595400.

It is an arithmetic number, because the mean of its divisors is an integer number (64334774).

Almost surely, 2^551440860 is an apocalyptic number.

It is an amenable number.

551440860 is an abundant number, since it is smaller than the sum of its proper divisors (992593716).

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

551440860 is a wasteful number, since it uses less digits than its factorization.

551440860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9190693 (or 9190691 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 551440860 is about 23482.7779446981. Note that the first 3 decimals coincide. The cubic root of 551440860 is about 820.0361177825.

The spelling of 551440860 in words is "five hundred fifty-one million, four hundred forty thousand, eight hundred sixty".