445681297 has 2 divisors, whose sum is σ = 445681298. Its totient is φ = 445681296.

The previous prime is 445681289. The next prime is 445681303. The reversal of 445681297 is 792186544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356492161 + 89189136 = 18881^2 + 9444^2 .

It is a cyclic number.

It is not a de Polignac number, because 445681297 - 2³ = 445681289 is a prime.

It is not a weakly prime, because it can be changed into another prime (445681237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222840648 + 222840649.

It is an arithmetic number, because the mean of its divisors is an integer number (222840649).

Almost surely, 2^445681297 is an apocalyptic number.

It is an amenable number.

445681297 is a deficient number, since it is larger than the sum of its proper divisors (1).

445681297 is an equidigital number, since it uses as much as digits as its factorization.

445681297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 445681297 is about 21111.1652212757. The cubic root of 445681297 is about 763.8500940547.

The spelling of 445681297 in words is "four hundred forty-five million, six hundred eighty-one thousand, two hundred ninety-seven".