253009161 has 12 divisors (see below), whose sum is σ = 367501680. Its totient is φ = 167729400.

The previous prime is 253009157. The next prime is 253009171. The reversal of 253009161 is 161900352.

It is not a de Polignac number, because 253009161 - 2² = 253009157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253009171) 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 11 ways as a sum of consecutive naturals, for example, 76915 + ... + 80136.

It is an arithmetic number, because the mean of its divisors is an integer number (30625140).

Almost surely, 2^253009161 is an apocalyptic number.

It is an amenable number.

253009161 is a deficient number, since it is larger than the sum of its proper divisors (114492519).

253009161 is a wasteful number, since it uses less digits than its factorization.

253009161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157236 (or 157233 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 253009161 is about 15906.2616915478. The cubic root of 253009161 is about 632.4779880584.

The spelling of 253009161 in words is "two hundred fifty-three million, nine thousand, one hundred sixty-one".