172272533 has 2 divisors, whose sum is σ = 172272534. Its totient is φ = 172272532.

The previous prime is 172272469. The next prime is 172272587. The reversal of 172272533 is 335272271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103083409 + 69189124 = 10153^2 + 8318^2 .

It is a cyclic number.

It is not a de Polignac number, because 172272533 - 2⁶ = 172272469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172272533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172272593) 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 as a sum of consecutive naturals, namely, 86136266 + 86136267.

It is an arithmetic number, because the mean of its divisors is an integer number (86136267).

Almost surely, 2^172272533 is an apocalyptic number.

It is an amenable number.

172272533 is a deficient number, since it is larger than the sum of its proper divisors (1).

172272533 is an equidigital number, since it uses as much as digits as its factorization.

172272533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 32.

The square root of 172272533 is about 13125.2631592666. The cubic root of 172272533 is about 556.4233497843.

The spelling of 172272533 in words is "one hundred seventy-two million, two hundred seventy-two thousand, five hundred thirty-three".