445523125321 has 2 divisors, whose sum is σ = 445523125322. Its totient is φ = 445523125320.

The previous prime is 445523125301. The next prime is 445523125337. The reversal of 445523125321 is 123521325544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440311873600 + 5211251721 = 663560^2 + 72189^2 .

It is a cyclic number.

It is not a de Polignac number, because 445523125321 - 2¹³ = 445523117129 is a prime.

It is not a weakly prime, because it can be changed into another prime (445523125301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222761562660 + 222761562661.

It is an arithmetic number, because the mean of its divisors is an integer number (222761562661).

Almost surely, 2^445523125321 is an apocalyptic number.

It is an amenable number.

445523125321 is a deficient number, since it is larger than the sum of its proper divisors (1).

445523125321 is an equidigital number, since it uses as much as digits as its factorization.

445523125321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 37.

The spelling of 445523125321 in words is "four hundred forty-five billion, five hundred twenty-three million, one hundred twenty-five thousand, three hundred twenty-one".