161022955 has 8 divisors (see below), whose sum is σ = 193301712. Its totient is φ = 128768928.

The previous prime is 161022947. The next prime is 161022989. The reversal of 161022955 is 559220161.

161022955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161022955 - 2³ = 161022947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14352 + ... + 22978.

It is an arithmetic number, because the mean of its divisors is an integer number (24162714).

Almost surely, 2^161022955 is an apocalyptic number.

161022955 is a deficient number, since it is larger than the sum of its proper divisors (32278757).

161022955 is an equidigital number, since it uses as much as digits as its factorization.

161022955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12365.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 161022955 is about 12689.4820619283. The cubic root of 161022955 is about 544.0380359705.

The spelling of 161022955 in words is "one hundred sixty-one million, twenty-two thousand, nine hundred fifty-five".