550504656 has 90 divisors (see below), whose sum is σ = 1668349878. Its totient is φ = 169378560.

The previous prime is 550504649. The next prime is 550504679. The reversal of 550504656 is 656405055.

It is a happy number.

550504656 is a `hidden beast` number, since 550 + 50 + 4 + 6 + 56 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 54997056 + 495507600 = 7416^2 + 22260^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 550504656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13026 + ... + 35646.

Almost surely, 2^550504656 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 550504656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834174939).

550504656 is an abundant number, since it is smaller than the sum of its proper divisors (1117845222).

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

550504656 is a wasteful number, since it uses less digits than its factorization.

550504656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22661 (or 22639 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 550504656 is about 23462.8356342536. The cubic root of 550504656 is about 819.5717851444.

The spelling of 550504656 in words is "five hundred fifty million, five hundred four thousand, six hundred fifty-six".