551551152444515 has 4 divisors (see below), whose sum is σ = 661861382933424. Its totient is φ = 441240921955608.

The previous prime is 551551152444427. The next prime is 551551152444517. The reversal of 551551152444515 is 515444251155155.

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 551551152444515 - 2³⁶ = 551482432967779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551551152444517) 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, 55155115244447 + ... + 55155115244456.

It is an arithmetic number, because the mean of its divisors is an integer number (165465345733356).

Almost surely, 2^{551551152444515} is an apocalyptic number.

551551152444515 is a deficient number, since it is larger than the sum of its proper divisors (110310230488909).

551551152444515 is a wasteful number, since it uses less digits than its factorization.

551551152444515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110310230488908.

The product of its digits is 10000000, while the sum is 53.

The spelling of 551551152444515 in words is "five hundred fifty-one trillion, five hundred fifty-one billion, one hundred fifty-two million, four hundred forty-four thousand, five hundred fifteen".