172192897 has 2 divisors, whose sum is σ = 172192898. Its totient is φ = 172192896.

The previous prime is 172192871. The next prime is 172192967. The reversal of 172192897 is 798291271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130667761 + 41525136 = 11431^2 + 6444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172192897 is a prime.

It is a super-3 number, since 3×172192897³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172192837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86096448 + 86096449.

It is an arithmetic number, because the mean of its divisors is an integer number (86096449).

Almost surely, 2^172192897 is an apocalyptic number.

It is an amenable number.

172192897 is a deficient number, since it is larger than the sum of its proper divisors (1).

172192897 is an equidigital number, since it uses as much as digits as its factorization.

172192897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The square root of 172192897 is about 13122.2291170365. The cubic root of 172192897 is about 556.3375977518.

The spelling of 172192897 in words is "one hundred seventy-two million, one hundred ninety-two thousand, eight hundred ninety-seven".