551115555 has 16 divisors (see below), whose sum is σ = 905617824. Its totient is φ = 285984000.

The previous prime is 551115533. The next prime is 551115647. The reversal of 551115555 is 555511155.

551115555 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551115555 - 2¹⁹ = 550591267 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495946 + ... + 497055.

It is an arithmetic number, because the mean of its divisors is an integer number (56601114).

Almost surely, 2^551115555 is an apocalyptic number.

551115555 is a deficient number, since it is larger than the sum of its proper divisors (354502269).

551115555 is a wasteful number, since it uses less digits than its factorization.

551115555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993046.

The product of its digits is 15625, while the sum is 33.

The square root of 551115555 is about 23475.8504638277. The cubic root of 551115555 is about 819.8748346533.

The spelling of 551115555 in words is "five hundred fifty-one million, one hundred fifteen thousand, five hundred fifty-five".