551344656 has 20 divisors (see below), whose sum is σ = 1424307152. Its totient is φ = 183781536.

The previous prime is 551344649. The next prime is 551344669. The reversal of 551344656 is 656443155.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5743126 + ... + 5743221.

Almost surely, 2^551344656 is an apocalyptic number.

It is an amenable number.

551344656 is an abundant number, since it is smaller than the sum of its proper divisors (872962496).

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

551344656 is a wasteful number, since it uses less digits than its factorization.

551344656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486358 (or 11486352 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 551344656 is about 23480.7294605598. The cubic root of 551344656 is about 819.9884273600.

The spelling of 551344656 in words is "five hundred fifty-one million, three hundred forty-four thousand, six hundred fifty-six".