172056529 has 2 divisors, whose sum is σ = 172056530. Its totient is φ = 172056528.

The previous prime is 172056527. The next prime is 172056551. The reversal of 172056529 is 925650271.

172056529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150013504 + 22043025 = 12248^2 + 4695^2 .

It is a cyclic number.

It is not a de Polignac number, because 172056529 - 2¹ = 172056527 is a prime.

Together with 172056527, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172056527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86028264 + 86028265.

It is an arithmetic number, because the mean of its divisors is an integer number (86028265).

Almost surely, 2^172056529 is an apocalyptic number.

It is an amenable number.

172056529 is a deficient number, since it is larger than the sum of its proper divisors (1).

172056529 is an equidigital number, since it uses as much as digits as its factorization.

172056529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 172056529 is about 13117.0320194776. The cubic root of 172056529 is about 556.1906952892.

The spelling of 172056529 in words is "one hundred seventy-two million, fifty-six thousand, five hundred twenty-nine".