172933973 has 2 divisors, whose sum is σ = 172933974. Its totient is φ = 172933972.

The previous prime is 172933951. The next prime is 172934039. The reversal of 172933973 is 379339271.

172933973 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., 97278769 + 75655204 = 9863^2 + 8698^2 .

It is a cyclic number.

It is not a de Polignac number, because 172933973 - 2²⁰ = 171885397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172933273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86466986 + 86466987.

It is an arithmetic number, because the mean of its divisors is an integer number (86466987).

Almost surely, 2^172933973 is an apocalyptic number.

It is an amenable number.

172933973 is a deficient number, since it is larger than the sum of its proper divisors (1).

172933973 is an equidigital number, since it uses as much as digits as its factorization.

172933973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 44.

The square root of 172933973 is about 13150.4362285059. The cubic root of 172933973 is about 557.1345690480.

The spelling of 172933973 in words is "one hundred seventy-two million, nine hundred thirty-three thousand, nine hundred seventy-three".