165231252 has 36 divisors (see below), whose sum is σ = 433139616. Its totient is φ = 55076760.

The previous prime is 165231223. The next prime is 165231281. The reversal of 165231252 is 252132561.

It is a happy number.

165231252 is a `hidden beast` number, since 1 + 652 + 3 + 1 + 2 + 5 + 2 = 666.

165231252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165231223) and next prime (165231281).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84024 + ... + 85967.

It is an arithmetic number, because the mean of its divisors is an integer number (12031656).

Almost surely, 2^165231252 is an apocalyptic number.

165231252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165231252 is an abundant number, since it is smaller than the sum of its proper divisors (267908364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165231252 is a wasteful number, since it uses less digits than its factorization.

165231252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170010 (or 169996 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 165231252 is about 12854.2308988130. The cubic root of 165231252 is about 548.7367724944.

The spelling of 165231252 in words is "one hundred sixty-five million, two hundred thirty-one thousand, two hundred fifty-two".