2561168 has 10 divisors (see below), whose sum is σ = 4962294. Its totient is φ = 1280576.

The previous prime is 2561159. The next prime is 2561179. The reversal of 2561168 is 8611652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 394384 = 1472^2 + 628^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2561168.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80021 + ... + 80052.

2^2561168 is an apocalyptic number.

It is an amenable number.

2561168 is a deficient number, since it is larger than the sum of its proper divisors (2401126).

2561168 is a wasteful number, since it uses less digits than its factorization.

2561168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160081 (or 160075 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2561168 is about 1600.3649583767. The cubic root of 2561168 is about 136.8188772782.

The spelling of 2561168 in words is "two million, five hundred sixty-one thousand, one hundred sixty-eight".