172749293 has 2 divisors, whose sum is σ = 172749294. Its totient is φ = 172749292.

The previous prime is 172749271. The next prime is 172749397. The reversal of 172749293 is 392947271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90973444 + 81775849 = 9538^2 + 9043^2 .

It is a cyclic number.

It is not a de Polignac number, because 172749293 - 2⁸ = 172749037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172749593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86374646 + 86374647.

It is an arithmetic number, because the mean of its divisors is an integer number (86374647).

Almost surely, 2^172749293 is an apocalyptic number.

It is an amenable number.

172749293 is a deficient number, since it is larger than the sum of its proper divisors (1).

172749293 is an equidigital number, since it uses as much as digits as its factorization.

172749293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 172749293 is about 13143.4125325199. The cubic root of 172749293 is about 556.9361729802.

The spelling of 172749293 in words is "one hundred seventy-two million, seven hundred forty-nine thousand, two hundred ninety-three".