172485493 has 2 divisors, whose sum is σ = 172485494. Its totient is φ = 172485492.

The previous prime is 172485437. The next prime is 172485539. The reversal of 172485493 is 394584271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169468324 + 3017169 = 13018^2 + 1737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172485493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172485793) 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, 86242746 + 86242747.

It is an arithmetic number, because the mean of its divisors is an integer number (86242747).

Almost surely, 2^172485493 is an apocalyptic number.

It is an amenable number.

172485493 is a deficient number, since it is larger than the sum of its proper divisors (1).

172485493 is an equidigital number, since it uses as much as digits as its factorization.

172485493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 172485493 is about 13133.3732529004. The cubic root of 172485493 is about 556.6525353284.

The spelling of 172485493 in words is "one hundred seventy-two million, four hundred eighty-five thousand, four hundred ninety-three".