445223507 has 2 divisors, whose sum is σ = 445223508. Its totient is φ = 445223506.

The previous prime is 445223497. The next prime is 445223531. The reversal of 445223507 is 705322544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445223507 - 2⁴ = 445223491 is a prime.

It is not a weakly prime, because it can be changed into another prime (445222507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222611753 + 222611754.

It is an arithmetic number, because the mean of its divisors is an integer number (222611754).

Almost surely, 2^445223507 is an apocalyptic number.

445223507 is a deficient number, since it is larger than the sum of its proper divisors (1).

445223507 is an equidigital number, since it uses as much as digits as its factorization.

445223507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 445223507 is about 21100.3200686625. The cubic root of 445223507 is about 763.5884700847.

The spelling of 445223507 in words is "four hundred forty-five million, two hundred twenty-three thousand, five hundred seven".