551288880 has 120 divisors (see below), whose sum is σ = 1856018112. Its totient is φ = 146644992.

The previous prime is 551288851. The next prime is 551288887. The reversal of 551288880 is 88882155.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (551288887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 414777 + ... + 416103.

Almost surely, 2^551288880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551288880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928009056).

551288880 is an abundant number, since it is smaller than the sum of its proper divisors (1304729232).

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

551288880 is a wasteful number, since it uses less digits than its factorization.

551288880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 45.

The square root of 551288880 is about 23479.5417331770. The cubic root of 551288880 is about 819.9607754388.

The spelling of 551288880 in words is "five hundred fifty-one million, two hundred eighty-eight thousand, eight hundred eighty".