161775352 has 16 divisors (see below), whose sum is σ = 303609600. Its totient is φ = 80812800.

The previous prime is 161775343. The next prime is 161775401. The reversal of 161775352 is 253577161.

It is a congruent number.

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, 424 + ... + 17992.

It is an arithmetic number, because the mean of its divisors is an integer number (18975600).

Almost surely, 2^161775352 is an apocalyptic number.

It is an amenable number.

161775352 is a deficient number, since it is larger than the sum of its proper divisors (141834248).

161775352 is a wasteful number, since it uses less digits than its factorization.

161775352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18726 (or 18722 counting only the distinct ones).

The product of its digits is 44100, while the sum is 37.

The square root of 161775352 is about 12719.0939928912. The cubic root of 161775352 is about 544.8840782545.

The spelling of 161775352 in words is "one hundred sixty-one million, seven hundred seventy-five thousand, three hundred fifty-two".