2521155117 has 32 divisors (see below), whose sum is σ = 3682457856. Its totient is φ = 1524902400.

The previous prime is 2521155113. The next prime is 2521155139. The reversal of 2521155117 is 7115511252.

It is not a de Polignac number, because 2521155117 - 2² = 2521155113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521155113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031617 + ... + 1034057.

It is an arithmetic number, because the mean of its divisors is an integer number (115076808).

Almost surely, 2^2521155117 is an apocalyptic number.

It is an amenable number.

2521155117 is a deficient number, since it is larger than the sum of its proper divisors (1161302739).

2521155117 is a wasteful number, since it uses less digits than its factorization.

2521155117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901.

The product of its digits is 3500, while the sum is 30.

The square root of 2521155117 is about 50211.1055146170. The cubic root of 2521155117 is about 1361.0263153043.

Adding to 2521155117 its reverse (7115511252), we get a palindrome (9636666369).

The spelling of 2521155117 in words is "two billion, five hundred twenty-one million, one hundred fifty-five thousand, one hundred seventeen".