551096909 has 16 divisors (see below), whose sum is σ = 612375360. Its totient is φ = 491736960.

The previous prime is 551096891. The next prime is 551096921. The reversal of 551096909 is 909690155.

It is not a de Polignac number, because 551096909 - 2²⁸ = 282661453 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551096909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551090909) 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, 229487 + ... + 231875.

It is an arithmetic number, because the mean of its divisors is an integer number (38273460).

Almost surely, 2^551096909 is an apocalyptic number.

It is an amenable number.

551096909 is a deficient number, since it is larger than the sum of its proper divisors (61278451).

551096909 is a wasteful number, since it uses less digits than its factorization.

551096909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 551096909 is about 23475.4533289562. The cubic root of 551096909 is about 819.8655882207.

The spelling of 551096909 in words is "five hundred fifty-one million, ninety-six thousand, nine hundred nine".