551013156 has 36 divisors (see below), whose sum is σ = 1407206892. Its totient is φ = 181776384.

The previous prime is 551013149. The next prime is 551013173. The reversal of 551013156 is 651310155.

It can be written as a sum of positive squares in 2 ways, for example, as 261468900 + 289544256 = 16170^2 + 17016^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75405 + ... + 82388.

Almost surely, 2^551013156 is an apocalyptic number.

It is an amenable number.

551013156 is an abundant number, since it is smaller than the sum of its proper divisors (856193736).

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

551013156 is a wasteful number, since it uses less digits than its factorization.

551013156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157900 (or 157895 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 551013156 is about 23473.6694191598. The cubic root of 551013156 is about 819.8240530688.

The spelling of 551013156 in words is "five hundred fifty-one million, thirteen thousand, one hundred fifty-six".