172200373 has 2 divisors, whose sum is σ = 172200374. Its totient is φ = 172200372.

The previous prime is 172200359. The next prime is 172200397. The reversal of 172200373 is 373002271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 32913169 = 11802^2 + 5737^2 .

It is an emirp because it is prime and its reverse (373002271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172200373 - 2²¹ = 170103221 is a prime.

It is a super-2 number, since 2×172200373² = 59305936922678258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172200473) 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, 86100186 + 86100187.

It is an arithmetic number, because the mean of its divisors is an integer number (86100187).

Almost surely, 2^172200373 is an apocalyptic number.

It is an amenable number.

172200373 is a deficient number, since it is larger than the sum of its proper divisors (1).

172200373 is an equidigital number, since it uses as much as digits as its factorization.

172200373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 172200373 is about 13122.5139740829. The cubic root of 172200373 is about 556.3456490318.

The spelling of 172200373 in words is "one hundred seventy-two million, two hundred thousand, three hundred seventy-three".