161775032 has 8 divisors (see below), whose sum is σ = 303328200. Its totient is φ = 80887512.

The previous prime is 161775017. The next prime is 161775041. The reversal of 161775032 is 230577161.

161775032 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 161775032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110932 + ... + 10110947.

It is an arithmetic number, because the mean of its divisors is an integer number (37916025).

Almost surely, 2^161775032 is an apocalyptic number.

It is an amenable number.

161775032 is a deficient number, since it is larger than the sum of its proper divisors (141553168).

161775032 is a wasteful number, since it uses less digits than its factorization.

161775032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20221885 (or 20221881 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 161775032 is about 12719.0814133726. The cubic root of 161775032 is about 544.8837189847.

The spelling of 161775032 in words is "one hundred sixty-one million, seven hundred seventy-five thousand, thirty-two".