172251252 has 48 divisors (see below), whose sum is σ = 460992000. Its totient is φ = 55563840.

The previous prime is 172251241. The next prime is 172251257. The reversal of 172251252 is 252152271.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172251257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22377 + ... + 29072.

It is an arithmetic number, because the mean of its divisors is an integer number (9604000).

Almost surely, 2^172251252 is an apocalyptic number.

172251252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172251252 is an abundant number, since it is smaller than the sum of its proper divisors (288740748).

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

172251252 is a wasteful number, since it uses less digits than its factorization.

172251252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51493 (or 51485 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 172251252 is about 13124.4524457213. The cubic root of 172251252 is about 556.4004369947.

The spelling of 172251252 in words is "one hundred seventy-two million, two hundred fifty-one thousand, two hundred fifty-two".