551879659 has 4 divisors (see below), whose sum is σ = 551930400. Its totient is φ = 551828920.

The previous prime is 551879621. The next prime is 551879689. The reversal of 551879659 is 956978155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 551879659 - 2²⁷ = 417661931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551879689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684 + ... + 33265.

It is an arithmetic number, because the mean of its divisors is an integer number (137982600).

Almost surely, 2^551879659 is an apocalyptic number.

551879659 is a deficient number, since it is larger than the sum of its proper divisors (50741).

551879659 is a wasteful number, since it uses less digits than its factorization.

551879659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50740.

The product of its digits is 3402000, while the sum is 55.

The square root of 551879659 is about 23492.1190827903. The cubic root of 551879659 is about 820.2535697063.

It can be divided in two parts, 55187 and 9659, that added together give a palindrome (64846).

The spelling of 551879659 in words is "five hundred fifty-one million, eight hundred seventy-nine thousand, six hundred fifty-nine".