161546252 has 24 divisors (see below), whose sum is σ = 323361696. Its totient is φ = 69176448.

The previous prime is 161546243. The next prime is 161546263. The reversal of 161546252 is 252645161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64088 + ... + 66560.

It is an arithmetic number, because the mean of its divisors is an integer number (13473404).

Almost surely, 2^161546252 is an apocalyptic number.

It is an amenable number.

161546252 is an abundant number, since it is smaller than the sum of its proper divisors (161815444).

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

161546252 is a wasteful number, since it uses less digits than its factorization.

161546252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4815 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 161546252 is about 12710.0846574679. The cubic root of 161546252 is about 544.6267421502.

The spelling of 161546252 in words is "one hundred sixty-one million, five hundred forty-six thousand, two hundred fifty-two".