172573201 has 2 divisors, whose sum is σ = 172573202. Its totient is φ = 172573200.

The previous prime is 172573189. The next prime is 172573211. The reversal of 172573201 is 102375271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158734801 + 13838400 = 12599^2 + 3720^2 .

It is a cyclic number.

It is not a de Polignac number, because 172573201 - 2⁵ = 172573169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172573201.

It is not a weakly prime, because it can be changed into another prime (172573211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86286600 + 86286601.

It is an arithmetic number, because the mean of its divisors is an integer number (86286601).

Almost surely, 2^172573201 is an apocalyptic number.

It is an amenable number.

172573201 is a deficient number, since it is larger than the sum of its proper divisors (1).

172573201 is an equidigital number, since it uses as much as digits as its factorization.

172573201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 172573201 is about 13136.7119554324. The cubic root of 172573201 is about 556.7468710059.

The spelling of 172573201 in words is "one hundred seventy-two million, five hundred seventy-three thousand, two hundred one".