162172258 has 16 divisors (see below), whose sum is σ = 262984320. Its totient is φ = 74741616.

The previous prime is 162172249. The next prime is 162172259. The reversal of 162172258 is 852271261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (162172259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56266 + ... + 59077.

It is an arithmetic number, because the mean of its divisors is an integer number (16436520).

Almost surely, 2^162172258 is an apocalyptic number.

162172258 is a deficient number, since it is larger than the sum of its proper divisors (100812062).

162172258 is a wasteful number, since it uses less digits than its factorization.

162172258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115401.

The product of its digits is 13440, while the sum is 34.

The square root of 162172258 is about 12734.6871967866. The cubic root of 162172258 is about 545.3293276521.

The spelling of 162172258 in words is "one hundred sixty-two million, one hundred seventy-two thousand, two hundred fifty-eight".