172252101 has 12 divisors (see below), whose sum is σ = 267166752. Its totient is φ = 98429688.

The previous prime is 172252097. The next prime is 172252103. The reversal of 172252101 is 101252271.

It is not a de Polignac number, because 172252101 - 2² = 172252097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172252103) 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 11 ways as a sum of consecutive naturals, for example, 585745 + ... + 586038.

It is an arithmetic number, because the mean of its divisors is an integer number (22263896).

Almost surely, 2^172252101 is an apocalyptic number.

It is an amenable number.

172252101 is a deficient number, since it is larger than the sum of its proper divisors (94914651).

172252101 is a wasteful number, since it uses less digits than its factorization.

172252101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171800 (or 1171793 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 172252101 is about 13124.4847898879. The cubic root of 172252101 is about 556.4013511306.

The spelling of 172252101 in words is "one hundred seventy-two million, two hundred fifty-two thousand, one hundred one".