2545117155 has 48 divisors (see below), whose sum is σ = 5051314944. Its totient is φ = 1161276480.

The previous prime is 2545117147. The next prime is 2545117171. The reversal of 2545117155 is 5517115452.

2545117155 is a `hidden beast` number, since 25 + 4 + 511 + 71 + 55 = 666.

It is not a de Polignac number, because 2545117155 - 2³ = 2545117147 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, 164920 + ... + 179690.

It is an arithmetic number, because the mean of its divisors is an integer number (105235728).

Almost surely, 2^2545117155 is an apocalyptic number.

2545117155 is a deficient number, since it is larger than the sum of its proper divisors (2506197789).

2545117155 is a wasteful number, since it uses less digits than its factorization.

2545117155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15336 (or 15333 counting only the distinct ones).

The product of its digits is 35000, while the sum is 36.

The square root of 2545117155 is about 50449.1541554465. The cubic root of 2545117155 is about 1365.3246339734.

The spelling of 2545117155 in words is "two billion, five hundred forty-five million, one hundred seventeen thousand, one hundred fifty-five".