161745952 has 24 divisors (see below), whose sum is σ = 322926912. Its totient is φ = 79732800.

The previous prime is 161745949. The next prime is 161745977. The reversal of 161745952 is 259547161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33324 + ... + 37867.

It is an arithmetic number, because the mean of its divisors is an integer number (13455288).

Almost surely, 2^161745952 is an apocalyptic number.

It is an amenable number.

161745952 is a deficient number, since it is larger than the sum of its proper divisors (161180960).

161745952 is an equidigital number, since it uses as much as digits as its factorization.

161745952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71272 (or 71264 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 161745952 is about 12717.9381976797. The cubic root of 161745952 is about 544.8510683590.

The spelling of 161745952 in words is "one hundred sixty-one million, seven hundred forty-five thousand, nine hundred fifty-two".