172257102 has 24 divisors (see below), whose sum is σ = 380267784. Its totient is φ = 56335344.

The previous prime is 172257091. The next prime is 172257131. The reversal of 172257102 is 201752271.

172257102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×172257102³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89328 + ... + 91235.

It is an arithmetic number, because the mean of its divisors is an integer number (15844491).

Almost surely, 2^172257102 is an apocalyptic number.

172257102 is an abundant number, since it is smaller than the sum of its proper divisors (208010682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172257102 is a wasteful number, since it uses less digits than its factorization.

172257102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180624 (or 180621 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 172257102 is about 13124.6753102696. The cubic root of 172257102 is about 556.4067357504.

The spelling of 172257102 in words is "one hundred seventy-two million, two hundred fifty-seven thousand, one hundred two".