161422351 has 8 divisors (see below), whose sum is σ = 163510160. Its totient is φ = 159345792.

The previous prime is 161422343. The next prime is 161422369. The reversal of 161422351 is 153224161.

It is a happy number.

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

It is not a de Polignac number, because 161422351 - 2³ = 161422343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161422451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28231 + ... + 33463.

It is an arithmetic number, because the mean of its divisors is an integer number (20438770).

Almost surely, 2^161422351 is an apocalyptic number.

161422351 is a deficient number, since it is larger than the sum of its proper divisors (2087809).

161422351 is a wasteful number, since it uses less digits than its factorization.

161422351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625.

The product of its digits is 1440, while the sum is 25.

The square root of 161422351 is about 12705.2096007897. The cubic root of 161422351 is about 544.4874692255.

The spelling of 161422351 in words is "one hundred sixty-one million, four hundred twenty-two thousand, three hundred fifty-one".