2545102161 has 32 divisors (see below), whose sum is σ = 4311883520. Its totient is φ = 1453427712.

The previous prime is 2545102151. The next prime is 2545102163. The reversal of 2545102161 is 1612015452.

2545102161 is a `hidden beast` number, since 2 + 545 + 102 + 16 + 1 = 666.

It is not a de Polignac number, because 2545102161 - 2²¹ = 2543005009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2545102163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396171 + ... + 402543.

It is an arithmetic number, because the mean of its divisors is an integer number (134746360).

Almost surely, 2^2545102161 is an apocalyptic number.

2545102161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2545102161 is a deficient number, since it is larger than the sum of its proper divisors (1766781359).

2545102161 is a wasteful number, since it uses less digits than its factorization.

2545102161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502 (or 8496 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2545102161 is about 50449.0055501593. The cubic root of 2545102161 is about 1365.3219527978.

It can be divided in two parts, 254 and 5102161, that added together give a triangular number (5102415 = T₃₁₉₄).

The spelling of 2545102161 in words is "two billion, five hundred forty-five million, one hundred two thousand, one hundred sixty-one".