550955865 has 16 divisors (see below), whose sum is σ = 896472000. Its totient is φ = 288862272.

The previous prime is 550955849. The next prime is 550955917. The reversal of 550955865 is 568559055.

It is not a de Polignac number, because 550955865 - 2⁴ = 550955849 is a prime.

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, 310390 + ... + 312159.

It is an arithmetic number, because the mean of its divisors is an integer number (56029500).

Almost surely, 2^550955865 is an apocalyptic number.

It is an amenable number.

550955865 is a deficient number, since it is larger than the sum of its proper divisors (345516135).

550955865 is a wasteful number, since it uses less digits than its factorization.

550955865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622616.

The product of its (nonzero) digits is 1350000, while the sum is 48.

The square root of 550955865 is about 23472.4490626777. The cubic root of 550955865 is about 819.7956386428.

The spelling of 550955865 in words is "five hundred fifty million, nine hundred fifty-five thousand, eight hundred sixty-five".