172133933 has 2 divisors, whose sum is σ = 172133934. Its totient is φ = 172133932.

The previous prime is 172133911. The next prime is 172133947. The reversal of 172133933 is 339331271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154803364 + 17330569 = 12442^2 + 4163^2 .

It is a cyclic number.

It is not a de Polignac number, because 172133933 - 2¹⁸ = 171871789 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172133933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172133903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86066966 + 86066967.

It is an arithmetic number, because the mean of its divisors is an integer number (86066967).

Almost surely, 2^172133933 is an apocalyptic number.

It is an amenable number.

172133933 is a deficient number, since it is larger than the sum of its proper divisors (1).

172133933 is an equidigital number, since it uses as much as digits as its factorization.

172133933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 32.

The square root of 172133933 is about 13119.9822027318. The cubic root of 172133933 is about 556.2740882890.

The spelling of 172133933 in words is "one hundred seventy-two million, one hundred thirty-three thousand, nine hundred thirty-three".