551444880 has 160 divisors (see below), whose sum is σ = 1986087168. Its totient is φ = 123955200.

The previous prime is 551444879. The next prime is 551444897. The reversal of 551444880 is 88444155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99790 + ... + 105170.

Almost surely, 2^551444880 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 551444880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (993043584).

551444880 is an abundant number, since it is smaller than the sum of its proper divisors (1434642288).

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

551444880 is a wasteful number, since it uses less digits than its factorization.

551444880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465 (or 5459 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The square root of 551444880 is about 23482.8635391853. The cubic root of 551444880 is about 820.0381104635.

The spelling of 551444880 in words is "five hundred fifty-one million, four hundred forty-four thousand, eight hundred eighty".