551599990 has 16 divisors (see below), whose sum is σ = 1014005952. Its totient is φ = 215945344.

The previous prime is 551599933. The next prime is 551600029. The reversal of 551599990 is 99995155.

It is a congruent number.

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, 586339 + ... + 587278.

It is an arithmetic number, because the mean of its divisors is an integer number (63375372).

Almost surely, 2^551599990 is an apocalyptic number.

551599990 is a deficient number, since it is larger than the sum of its proper divisors (462405962).

551599990 is a wasteful number, since it uses less digits than its factorization.

551599990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173671.

The product of its (nonzero) digits is 820125, while the sum is 52.

The square root of 551599990 is about 23486.1659280522. The cubic root of 551599990 is about 820.1149898229.

The spelling of 551599990 in words is "five hundred fifty-one million, five hundred ninety-nine thousand, nine hundred ninety".