172725533 has 2 divisors, whose sum is σ = 172725534. Its totient is φ = 172725532.

The previous prime is 172725493. The next prime is 172725547. The reversal of 172725533 is 335527271.

172725533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88416409 + 84309124 = 9403^2 + 9182^2 .

It is an emirp because it is prime and its reverse (335527271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172725533 - 2²⁰ = 171676957 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172725493 and 172725502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172725733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86362766 + 86362767.

It is an arithmetic number, because the mean of its divisors is an integer number (86362767).

Almost surely, 2^172725533 is an apocalyptic number.

It is an amenable number.

172725533 is a deficient number, since it is larger than the sum of its proper divisors (1).

172725533 is an equidigital number, since it uses as much as digits as its factorization.

172725533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 35.

The square root of 172725533 is about 13142.5086265903. The cubic root of 172725533 is about 556.9106380755.

The spelling of 172725533 in words is "one hundred seventy-two million, seven hundred twenty-five thousand, five hundred thirty-three".