551615113 has 4 divisors (see below), whose sum is σ = 630417280. Its totient is φ = 472812948.

The previous prime is 551615111. The next prime is 551615159. The reversal of 551615113 is 311516155.

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 551615113 - 2¹ = 551615111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551615111) 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 3 ways as a sum of consecutive naturals, for example, 39401073 + ... + 39401086.

It is an arithmetic number, because the mean of its divisors is an integer number (157604320).

Almost surely, 2^551615113 is an apocalyptic number.

It is an amenable number.

551615113 is a deficient number, since it is larger than the sum of its proper divisors (78802167).

551615113 is an equidigital number, since it uses as much as digits as its factorization.

551615113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78802166.

The product of its digits is 2250, while the sum is 28.

The square root of 551615113 is about 23486.4878813330. The cubic root of 551615113 is about 820.1224846778.

The spelling of 551615113 in words is "five hundred fifty-one million, six hundred fifteen thousand, one hundred thirteen".