172330727 has 2 divisors, whose sum is σ = 172330728. Its totient is φ = 172330726.

The previous prime is 172330723. The next prime is 172330729. The reversal of 172330727 is 727033271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172330727 - 2² = 172330723 is a prime.

Together with 172330729, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172330693 and 172330702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172330721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86165363 + 86165364.

It is an arithmetic number, because the mean of its divisors is an integer number (86165364).

Almost surely, 2^172330727 is an apocalyptic number.

172330727 is a deficient number, since it is larger than the sum of its proper divisors (1).

172330727 is an equidigital number, since it uses as much as digits as its factorization.

172330727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 172330727 is about 13127.4798419194. The cubic root of 172330727 is about 556.4859963643.

Adding to 172330727 its reverse (727033271), we get a palindrome (899363998).

The spelling of 172330727 in words is "one hundred seventy-two million, three hundred thirty thousand, seven hundred twenty-seven".