172162079 has 4 divisors (see below), whose sum is σ = 172246200. Its totient is φ = 172077960.

The previous prime is 172162063. The next prime is 172162087. The reversal of 172162079 is 970261271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970261271 = 7 ⋅138608753.

It is a cyclic number.

It is not a de Polignac number, because 172162079 - 2⁴ = 172162063 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 (172162019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38912 + ... + 43109.

It is an arithmetic number, because the mean of its divisors is an integer number (43061550).

Almost surely, 2^172162079 is an apocalyptic number.

172162079 is a deficient number, since it is larger than the sum of its proper divisors (84121).

172162079 is an equidigital number, since it uses as much as digits as its factorization.

172162079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84120.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 172162079 is about 13121.0547975382. The cubic root of 172162079 is about 556.3044058387.

The spelling of 172162079 in words is "one hundred seventy-two million, one hundred sixty-two thousand, seventy-nine".