253165965 has 32 divisors (see below), whose sum is σ = 438721920. Its totient is φ = 123922176.

The previous prime is 253165961. The next prime is 253165973. The reversal of 253165965 is 569561352.

It is not a de Polignac number, because 253165965 - 2² = 253165961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253165961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31279 + ... + 38531.

It is an arithmetic number, because the mean of its divisors is an integer number (13710060).

Almost surely, 2^253165965 is an apocalyptic number.

It is an amenable number.

253165965 is a deficient number, since it is larger than the sum of its proper divisors (185555955).

253165965 is a wasteful number, since it uses less digits than its factorization.

253165965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453.

The product of its digits is 243000, while the sum is 42.

The square root of 253165965 is about 15911.1899303603. The cubic root of 253165965 is about 632.6086217965.

The spelling of 253165965 in words is "two hundred fifty-three million, one hundred sixty-five thousand, nine hundred sixty-five".