551079956 has 48 divisors (see below), whose sum is σ = 1175529600. Its totient is φ = 220658688.

The previous prime is 551079941. The next prime is 551080037. The reversal of 551079956 is 659970155.

It is a self number, because there is not a number n which added to its sum of digits gives 551079956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62000 + ... + 70328.

It is an arithmetic number, because the mean of its divisors is an integer number (24490200).

Almost surely, 2^551079956 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 551079956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587764800).

551079956 is an abundant number, since it is smaller than the sum of its proper divisors (624449644).

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

551079956 is a wasteful number, since it uses less digits than its factorization.

551079956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8496 (or 8494 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 47.

The square root of 551079956 is about 23475.0922468901. The cubic root of 551079956 is about 819.8571811549.

The spelling of 551079956 in words is "five hundred fifty-one million, seventy-nine thousand, nine hundred fifty-six".