445501013 has 2 divisors, whose sum is σ = 445501014. Its totient is φ = 445501012.

The previous prime is 445501009. The next prime is 445501061. The reversal of 445501013 is 310105544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336465649 + 109035364 = 18343^2 + 10442^2 .

It is a cyclic number.

It is not a de Polignac number, because 445501013 - 2² = 445501009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445501013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445501003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222750506 + 222750507.

It is an arithmetic number, because the mean of its divisors is an integer number (222750507).

Almost surely, 2^445501013 is an apocalyptic number.

It is an amenable number.

445501013 is a deficient number, since it is larger than the sum of its proper divisors (1).

445501013 is an equidigital number, since it uses as much as digits as its factorization.

445501013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 445501013 is about 21106.8949161169. The cubic root of 445501013 is about 763.7470843300.

Adding to 445501013 its reverse (310105544), we get a palindrome (755606557).

The spelling of 445501013 in words is "four hundred forty-five million, five hundred one thousand, thirteen".