172900529 has 2 divisors, whose sum is σ = 172900530. Its totient is φ = 172900528.

The previous prime is 172900501. The next prime is 172900531. The reversal of 172900529 is 925009271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172869904 + 30625 = 13148^2 + 175^2 .

It is an emirp because it is prime and its reverse (925009271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172900529 is a prime.

Together with 172900531, 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 (172900579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86450264 + 86450265.

It is an arithmetic number, because the mean of its divisors is an integer number (86450265).

Almost surely, 2^172900529 is an apocalyptic number.

It is an amenable number.

172900529 is a deficient number, since it is larger than the sum of its proper divisors (1).

172900529 is an equidigital number, since it uses as much as digits as its factorization.

172900529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 172900529 is about 13149.1645742230. The cubic root of 172900529 is about 557.0986516600.

The spelling of 172900529 in words is "one hundred seventy-two million, nine hundred thousand, five hundred twenty-nine".