551180868 has 96 divisors (see below), whose sum is σ = 1606606848. Its totient is φ = 143424000.

The previous prime is 551180863. The next prime is 551180893. The reversal of 551180868 is 868081155.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (551180863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38043 + ... + 50493.

It is an arithmetic number, because the mean of its divisors is an integer number (16735488).

Almost surely, 2^551180868 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 551180868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803303424).

551180868 is an abundant number, since it is smaller than the sum of its proper divisors (1055425980).

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

551180868 is a wasteful number, since it uses less digits than its factorization.

551180868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513 (or 12511 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 42.

The square root of 551180868 is about 23477.2414904307. The cubic root of 551180868 is about 819.9072213094.

The spelling of 551180868 in words is "five hundred fifty-one million, one hundred eighty thousand, eight hundred sixty-eight".