445493173 has 2 divisors, whose sum is σ = 445493174. Its totient is φ = 445493172.

The previous prime is 445493131. The next prime is 445493179. The reversal of 445493173 is 371394544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346629924 + 98863249 = 18618^2 + 9943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445493173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445493179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222746586 + 222746587.

It is an arithmetic number, because the mean of its divisors is an integer number (222746587).

Almost surely, 2^445493173 is an apocalyptic number.

It is an amenable number.

445493173 is a deficient number, since it is larger than the sum of its proper divisors (1).

445493173 is an equidigital number, since it uses as much as digits as its factorization.

445493173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 445493173 is about 21106.7091939980. The cubic root of 445493173 is about 763.7426041216.

The spelling of 445493173 in words is "four hundred forty-five million, four hundred ninety-three thousand, one hundred seventy-three".