5515665155 has 48 divisors (see below), whose sum is σ = 9045527904. Its totient is φ = 3173829120.

The previous prime is 5515665139. The next prime is 5515665217.

5515665155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5515665155 - 2⁴ = 5515665139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43682 + ... + 113751.

It is an arithmetic number, because the mean of its divisors is an integer number (188448498).

Almost surely, 2^5515665155 is an apocalyptic number.

5515665155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5515665155 is a deficient number, since it is larger than the sum of its proper divisors (3529862749).

5515665155 is a wasteful number, since it uses less digits than its factorization.

5515665155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157476 (or 157469 counting only the distinct ones).

The product of its digits is 562500, while the sum is 44.

The square root of 5515665155 is about 74267.5242282924. The cubic root of 5515665155 is about 1766.8484413454.

The spelling of 5515665155 in words is "five billion, five hundred fifteen million, six hundred sixty-five thousand, one hundred fifty-five".