551360879 has 4 divisors (see below), whose sum is σ = 551533320. Its totient is φ = 551188440.

The previous prime is 551360863. The next prime is 551360911. The reversal of 551360879 is 978063155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551360879 - 2⁴ = 551360863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551360819) 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, 81332 + ... + 87849.

It is an arithmetic number, because the mean of its divisors is an integer number (137883330).

Almost surely, 2^551360879 is an apocalyptic number.

551360879 is a deficient number, since it is larger than the sum of its proper divisors (172441).

551360879 is a wasteful number, since it uses less digits than its factorization.

551360879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172440.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 551360879 is about 23481.0749115112. The cubic root of 551360879 is about 819.9964698440.

The spelling of 551360879 in words is "five hundred fifty-one million, three hundred sixty thousand, eight hundred seventy-nine".