161332875 has 48 divisors (see below), whose sum is σ = 317292768. Its totient is φ = 78216000.

The previous prime is 161332859. The next prime is 161332889. The reversal of 161332875 is 578233161.

161332875 is a `hidden beast` number, since 1 + 613 + 32 + 8 + 7 + 5 = 666.

It is not a de Polignac number, because 161332875 - 2⁴ = 161332859 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5857 + ... + 18893.

It is an arithmetic number, because the mean of its divisors is an integer number (6610266).

Almost surely, 2^161332875 is an apocalyptic number.

161332875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161332875 is a deficient number, since it is larger than the sum of its proper divisors (155959893).

161332875 is a wasteful number, since it uses less digits than its factorization.

161332875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069 (or 13056 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 161332875 is about 12701.6878799630. The cubic root of 161332875 is about 544.3868479571.

The spelling of 161332875 in words is "one hundred sixty-one million, three hundred thirty-two thousand, eight hundred seventy-five".