551142880 has 48 divisors (see below), whose sum is σ = 1370612880. Its totient is φ = 208852992.

The previous prime is 551142877. The next prime is 551142887. The reversal of 551142880 is 88241155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551142887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87609 + ... + 93688.

It is an arithmetic number, because the mean of its divisors is an integer number (28554435).

Almost surely, 2^551142880 is an apocalyptic number.

It is an amenable number.

551142880 is an abundant number, since it is smaller than the sum of its proper divisors (819470000).

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

551142880 is a wasteful number, since it uses less digits than its factorization.

551142880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181331 (or 181323 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 551142880 is about 23476.4324376597. The cubic root of 551142880 is about 819.8883845700. Note that the first 3 decimals are identical.

The spelling of 551142880 in words is "five hundred fifty-one million, one hundred forty-two thousand, eight hundred eighty".