2152415155 has 24 divisors (see below), whose sum is σ = 2857976352. Its totient is φ = 1554960000.

The previous prime is 2152415143. The next prime is 2152415173. The reversal of 2152415155 is 5515142512.

2152415155 = 357² + 358² + ... + 1866².

2152415155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2152415155 - 2⁹ = 2152414643 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79575 + ... + 103135.

It is an arithmetic number, because the mean of its divisors is an integer number (119082348).

Almost surely, 2^2152415155 is an apocalyptic number.

2152415155 is a deficient number, since it is larger than the sum of its proper divisors (705561197).

2152415155 is a wasteful number, since it uses less digits than its factorization.

2152415155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23739 (or 23728 counting only the distinct ones).

The product of its digits is 10000, while the sum is 31.

The square root of 2152415155 is about 46394.1284539326. The cubic root of 2152415155 is about 1291.1459790373.

Adding to 2152415155 its reverse (5515142512), we get a palindrome (7667557667).

The spelling of 2152415155 in words is "two billion, one hundred fifty-two million, four hundred fifteen thousand, one hundred fifty-five".