551015994 has 16 divisors (see below), whose sum is σ = 1115982720. Its totient is φ = 181346880.

The previous prime is 551015981. The next prime is 551016049. The reversal of 551015994 is 499510155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580767 + ... + 581714.

It is an arithmetic number, because the mean of its divisors is an integer number (69748920).

Almost surely, 2^551015994 is an apocalyptic number.

551015994 is an abundant number, since it is smaller than the sum of its proper divisors (564966726).

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

551015994 is a wasteful number, since it uses less digits than its factorization.

551015994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162565.

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 551015994 is about 23473.7298697927. The cubic root of 551015994 is about 819.8254605710.

The spelling of 551015994 in words is "five hundred fifty-one million, fifteen thousand, nine hundred ninety-four".