445204457 has 2 divisors, whose sum is σ = 445204458. Its totient is φ = 445204456.

The previous prime is 445204453. The next prime is 445204477. The reversal of 445204457 is 754402544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420414016 + 24790441 = 20504^2 + 4979^2 .

It is a cyclic number.

It is not a de Polignac number, because 445204457 - 2² = 445204453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445204453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222602228 + 222602229.

It is an arithmetic number, because the mean of its divisors is an integer number (222602229).

Almost surely, 2^445204457 is an apocalyptic number.

It is an amenable number.

445204457 is a deficient number, since it is larger than the sum of its proper divisors (1).

445204457 is an equidigital number, since it uses as much as digits as its factorization.

445204457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 35.

The square root of 445204457 is about 21099.8686488803. The cubic root of 445204457 is about 763.5775792493.

The spelling of 445204457 in words is "four hundred forty-five million, two hundred four thousand, four hundred fifty-seven".