445530913 has 2 divisors, whose sum is σ = 445530914. Its totient is φ = 445530912.

The previous prime is 445530901. The next prime is 445530923. The reversal of 445530913 is 319035544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382280704 + 63250209 = 19552^2 + 7953^2 .

It is a cyclic number.

It is not a de Polignac number, because 445530913 - 2¹⁷ = 445399841 is a prime.

It is a super-2 number, since 2×445530913² = 396995588877227138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445530923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222765456 + 222765457.

It is an arithmetic number, because the mean of its divisors is an integer number (222765457).

Almost surely, 2^445530913 is an apocalyptic number.

It is an amenable number.

445530913 is a deficient number, since it is larger than the sum of its proper divisors (1).

445530913 is an equidigital number, since it uses as much as digits as its factorization.

445530913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 445530913 is about 21107.6032035852. The cubic root of 445530913 is about 763.7641703570.

The spelling of 445530913 in words is "four hundred forty-five million, five hundred thirty thousand, nine hundred thirteen".