172465313 has 2 divisors, whose sum is σ = 172465314. Its totient is φ = 172465312.

The previous prime is 172465273. The next prime is 172465331. The reversal of 172465313 is 313564271.

Together with next prime (172465331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119946304 + 52519009 = 10952^2 + 7247^2 .

It is a cyclic number.

It is not a de Polignac number, because 172465313 - 2⁸ = 172465057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172465313.

It is not a weakly prime, because it can be changed into another prime (172465373) 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, 86232656 + 86232657.

It is an arithmetic number, because the mean of its divisors is an integer number (86232657).

Almost surely, 2^172465313 is an apocalyptic number.

It is an amenable number.

172465313 is a deficient number, since it is larger than the sum of its proper divisors (1).

172465313 is an equidigital number, since it uses as much as digits as its factorization.

172465313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 172465313 is about 13132.6049586516. The cubic root of 172465313 is about 556.6308258963.

The spelling of 172465313 in words is "one hundred seventy-two million, four hundred sixty-five thousand, three hundred thirteen".