172382897 has 2 divisors, whose sum is σ = 172382898. Its totient is φ = 172382896.

The previous prime is 172382867. The next prime is 172382921. The reversal of 172382897 is 798283271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146991376 + 25391521 = 12124^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 172382897 - 2¹⁰ = 172381873 is a prime.

It is a super-2 number, since 2×172382897² = 59431726356225218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172382807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86191448 + 86191449.

It is an arithmetic number, because the mean of its divisors is an integer number (86191449).

Almost surely, 2^172382897 is an apocalyptic number.

It is an amenable number.

172382897 is a deficient number, since it is larger than the sum of its proper divisors (1).

172382897 is an equidigital number, since it uses as much as digits as its factorization.

172382897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 47.

The square root of 172382897 is about 13129.4667446930. The cubic root of 172382897 is about 556.5421460438.

The spelling of 172382897 in words is "one hundred seventy-two million, three hundred eighty-two thousand, eight hundred ninety-seven".