551444160 has 112 divisors (see below), whose sum is σ = 1765011456. Its totient is φ = 145861632.

The previous prime is 551444141. The next prime is 551444161. The reversal of 551444160 is 61444155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (551444161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119659 + ... + 124181.

Almost surely, 2^551444160 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 551444160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882505728).

551444160 is an abundant number, since it is smaller than the sum of its proper divisors (1213567296).

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

551444160 is a wasteful number, since it uses less digits than its factorization.

551444160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 551444160 is about 23482.8482088523. The cubic root of 551444160 is about 820.0377535661.

The spelling of 551444160 in words is "five hundred fifty-one million, four hundred forty-four thousand, one hundred sixty".