172252100 has 36 divisors (see below), whose sum is σ = 393464400. Its totient is φ = 65273760.

The previous prime is 172252097. The next prime is 172252103. The reversal of 172252100 is 1252271.

It is an interprime number because it is at equal distance from previous prime (172252097) and next prime (172252103).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (172252103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43430 + ... + 47229.

Almost surely, 2^172252100 is an apocalyptic number.

172252100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172252100 is an abundant number, since it is smaller than the sum of its proper divisors (221212300).

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

172252100 is a wasteful number, since it uses less digits than its factorization.

172252100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90692 (or 90685 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 172252100 is about 13124.4847517912. The cubic root of 172252100 is about 556.4013500539.

The spelling of 172252100 in words is "one hundred seventy-two million, two hundred fifty-two thousand, one hundred".