445424549 has 2 divisors, whose sum is σ = 445424550. Its totient is φ = 445424548.

The previous prime is 445424503. The next prime is 445424557. The reversal of 445424549 is 945424544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331895524 + 113529025 = 18218^2 + 10655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445424549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445424569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222712274 + 222712275.

It is an arithmetic number, because the mean of its divisors is an integer number (222712275).

Almost surely, 2^445424549 is an apocalyptic number.

It is an amenable number.

445424549 is a deficient number, since it is larger than the sum of its proper divisors (1).

445424549 is an equidigital number, since it uses as much as digits as its factorization.

445424549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 41.

The square root of 445424549 is about 21105.0834871601. The cubic root of 445424549 is about 763.7033863385.

The spelling of 445424549 in words is "four hundred forty-five million, four hundred twenty-four thousand, five hundred forty-nine".