172473233 has 2 divisors, whose sum is σ = 172473234. Its totient is φ = 172473232.

The previous prime is 172473157. The next prime is 172473247. The reversal of 172473233 is 332374271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135652609 + 36820624 = 11647^2 + 6068^2 .

It is a cyclic number.

It is not a de Polignac number, because 172473233 - 2¹⁴ = 172456849 is a prime.

It is a super-2 number, since 2×172473233² = 59494032202944578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172473233.

It is not a weakly prime, because it can be changed into another prime (172473283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86236616 + 86236617.

It is an arithmetic number, because the mean of its divisors is an integer number (86236617).

Almost surely, 2^172473233 is an apocalyptic number.

It is an amenable number.

172473233 is a deficient number, since it is larger than the sum of its proper divisors (1).

172473233 is an equidigital number, since it uses as much as digits as its factorization.

172473233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 32.

The square root of 172473233 is about 13132.9064947558. The cubic root of 172473233 is about 556.6393463510.

The spelling of 172473233 in words is "one hundred seventy-two million, four hundred seventy-three thousand, two hundred thirty-three".