161032855 has 4 divisors (see below), whose sum is σ = 193239432. Its totient is φ = 128826280.

The previous prime is 161032841. The next prime is 161032873. The reversal of 161032855 is 558230161.

161032855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 161032855 - 2⁷ = 161032727 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 16103281 + ... + 16103290.

It is an arithmetic number, because the mean of its divisors is an integer number (48309858).

Almost surely, 2^161032855 is an apocalyptic number.

161032855 is a deficient number, since it is larger than the sum of its proper divisors (32206577).

161032855 is an equidigital number, since it uses as much as digits as its factorization.

161032855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32206576.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 161032855 is about 12689.8721427759. The cubic root of 161032855 is about 544.0491852425.

The spelling of 161032855 in words is "one hundred sixty-one million, thirty-two thousand, eight hundred fifty-five".