172275100 has 18 divisors (see below), whose sum is σ = 373837184. Its totient is φ = 68910000.

The previous prime is 172275079. The next prime is 172275101. The reversal of 172275100 is 1572271.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172275101) 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 5 ways as a sum of consecutive naturals, for example, 861276 + ... + 861475.

Almost surely, 2^172275100 is an apocalyptic number.

172275100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172275100 is an abundant number, since it is smaller than the sum of its proper divisors (201562084).

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

172275100 is a wasteful number, since it uses less digits than its factorization.

172275100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722765 (or 1722758 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 172275100 is about 13125.3609474178. The cubic root of 172275100 is about 556.4261134898.

The spelling of 172275100 in words is "one hundred seventy-two million, two hundred seventy-five thousand, one hundred".