102172165 has 8 divisors (see below), whose sum is σ = 122699808. Its totient is φ = 81675600.

The previous prime is 102172157. The next prime is 102172199. The reversal of 102172165 is 561271201.

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

It is not a de Polignac number, because 102172165 - 2³ = 102172157 is a prime.

It is a Duffinian number.

It is a congruent 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, 214 + ... + 14296.

It is an arithmetic number, because the mean of its divisors is an integer number (15337476).

Almost surely, 2^102172165 is an apocalyptic number.

It is an amenable number.

102172165 is a deficient number, since it is larger than the sum of its proper divisors (20527643).

102172165 is a wasteful number, since it uses less digits than its factorization.

102172165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15539.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 102172165 is about 10108.0247823202. The cubic root of 102172165 is about 467.4956046371.

The spelling of 102172165 in words is "one hundred two million, one hundred seventy-two thousand, one hundred sixty-five".