253561165 has 48 divisors (see below), whose sum is σ = 367476480. Its totient is φ = 165559680.

The previous prime is 253561157. The next prime is 253561199. The reversal of 253561165 is 561165352.

253561165 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 253561165 - 2³ = 253561157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253561165.

It is a congruent number.

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, 3209596 + ... + 3209674.

It is an arithmetic number, because the mean of its divisors is an integer number (7655760).

Almost surely, 2^253561165 is an apocalyptic number.

It is an amenable number.

253561165 is a deficient number, since it is larger than the sum of its proper divisors (113915315).

253561165 is a wasteful number, since it uses less digits than its factorization.

253561165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 175 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 253561165 is about 15923.6040204471. The cubic root of 253561165 is about 632.9376246181.

The spelling of 253561165 in words is "two hundred fifty-three million, five hundred sixty-one thousand, one hundred sixty-five".