161432875 has 16 divisors (see below), whose sum is σ = 203074560. Its totient is φ = 128116800.

The previous prime is 161432861. The next prime is 161432899. The reversal of 161432875 is 578234161.

It is not a de Polignac number, because 161432875 - 2²¹ = 159335723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10791 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (12692160).

Almost surely, 2^161432875 is an apocalyptic number.

161432875 is a deficient number, since it is larger than the sum of its proper divisors (41641685).

161432875 is a wasteful number, since it uses less digits than its factorization.

161432875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311 (or 10301 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 161432875 is about 12705.6237548575. The cubic root of 161432875 is about 544.4993016670.

The spelling of 161432875 in words is "one hundred sixty-one million, four hundred thirty-two thousand, eight hundred seventy-five".