551709959 has 12 divisors (see below), whose sum is σ = 594840744. Its totient is φ = 511488384.

The previous prime is 551709953. The next prime is 551709967. The reversal of 551709959 is 959907155.

It is a happy number.

It is not a de Polignac number, because 551709959 - 2²⁰ = 550661383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551709953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5117 + ... + 33609.

It is an arithmetic number, because the mean of its divisors is an integer number (49570062).

Almost surely, 2^551709959 is an apocalyptic number.

551709959 is a deficient number, since it is larger than the sum of its proper divisors (43130785).

551709959 is a wasteful number, since it uses less digits than its factorization.

551709959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28594 (or 28577 counting only the distinct ones).

The product of its (nonzero) digits is 637875, while the sum is 50.

The square root of 551709959 is about 23488.5069555304. The cubic root of 551709959 is about 820.1694865804.

The spelling of 551709959 in words is "five hundred fifty-one million, seven hundred nine thousand, nine hundred fifty-nine".