551199859 has 16 divisors (see below), whose sum is σ = 654171840. Its totient is φ = 454602240.

The previous prime is 551199799. The next prime is 551199877. The reversal of 551199859 is 958991155.

It is a cyclic number.

It is not a de Polignac number, because 551199859 - 2²⁷ = 416982131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551199359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7797 + ... + 34105.

It is an arithmetic number, because the mean of its divisors is an integer number (40885740).

Almost surely, 2^551199859 is an apocalyptic number.

551199859 is a deficient number, since it is larger than the sum of its proper divisors (102971981).

551199859 is a wasteful number, since it uses less digits than its factorization.

551199859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26430.

The product of its digits is 729000, while the sum is 52.

The square root of 551199859 is about 23477.6459424705. The cubic root of 551199859 is about 819.9166378671.

The spelling of 551199859 in words is "five hundred fifty-one million, one hundred ninety-nine thousand, eight hundred fifty-nine".