172133953 has 6 divisors (see below), whose sum is σ = 176913366. Its totient is φ = 167480352.

The previous prime is 172133947. The next prime is 172133957. The reversal of 172133953 is 359331271.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 112720689 + 59413264 = 10617^2 + 7708^2 .

It is not a de Polignac number, because 172133953 - 2⁹ = 172133441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172133957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61500 + ... + 64237.

It is an arithmetic number, because the mean of its divisors is an integer number (29485561).

Almost surely, 2^172133953 is an apocalyptic number.

It is an amenable number.

172133953 is a deficient number, since it is larger than the sum of its proper divisors (4779413).

172133953 is an equidigital number, since it uses as much as digits as its factorization.

172133953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125811 (or 125774 counting only the distinct ones).

The product of its digits is 17010, while the sum is 34.

The square root of 172133953 is about 13119.9829649280. The cubic root of 172133953 is about 556.2741098332.

The spelling of 172133953 in words is "one hundred seventy-two million, one hundred thirty-three thousand, nine hundred fifty-three".