551005134809 has 4 divisors (see below), whose sum is σ = 551013661440. Its totient is φ = 550996608180.

The previous prime is 551005134791. The next prime is 551005134817. The reversal of 551005134809 is 908431500155.

551005134809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551005134809 - 2²⁴ = 550988357593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551005134409) 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, 4165637 + ... + 4295874.

It is an arithmetic number, because the mean of its divisors is an integer number (137753415360).

Almost surely, 2^551005134809 is an apocalyptic number.

It is an amenable number.

551005134809 is a deficient number, since it is larger than the sum of its proper divisors (8526631).

551005134809 is an equidigital number, since it uses as much as digits as its factorization.

551005134809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526630.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 551005134809 in words is "five hundred fifty-one billion, five million, one hundred thirty-four thousand, eight hundred nine".