550564398 has 32 divisors (see below), whose sum is σ = 1238227200. Its totient is φ = 181308888.

The previous prime is 550564379. The next prime is 550564411. The reversal of 550564398 is 893465055.

550564398 is a `hidden beast` number, since 5 + 50 + 564 + 39 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56938 + ... + 65901.

It is an arithmetic number, because the mean of its divisors is an integer number (38694600).

Almost surely, 2^550564398 is an apocalyptic number.

550564398 is an abundant number, since it is smaller than the sum of its proper divisors (687662802).

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

550564398 is a wasteful number, since it uses less digits than its factorization.

550564398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122933 (or 122927 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 550564398 is about 23464.1087194890. The cubic root of 550564398 is about 819.6014313281.

The spelling of 550564398 in words is "five hundred fifty million, five hundred sixty-four thousand, three hundred ninety-eight".