161372207 has 8 divisors (see below), whose sum is σ = 167445936. Its totient is φ = 155388672.

The previous prime is 161372203. The next prime is 161372213. The reversal of 161372207 is 702273161.

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 161372207 - 2² = 161372203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161372207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161372201) 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, 18893 + ... + 26070.

It is an arithmetic number, because the mean of its divisors is an integer number (20930742).

Almost surely, 2^161372207 is an apocalyptic number.

161372207 is a deficient number, since it is larger than the sum of its proper divisors (6073729).

161372207 is an equidigital number, since it uses as much as digits as its factorization.

161372207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45097.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 161372207 is about 12703.2360837702. The cubic root of 161372207 is about 544.4310837929.

The spelling of 161372207 in words is "one hundred sixty-one million, three hundred seventy-two thousand, two hundred seven".