45220013 has 2 divisors, whose sum is σ = 45220014. Its totient is φ = 45220012.

The previous prime is 45220009. The next prime is 45220027. The reversal of 45220013 is 31002254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35844169 + 9375844 = 5987^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 45220013 - 2² = 45220009 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45219973 and 45220000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45220003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22610006 + 22610007.

It is an arithmetic number, because the mean of its divisors is an integer number (22610007).

Almost surely, 2^45220013 is an apocalyptic number.

It is an amenable number.

45220013 is a deficient number, since it is larger than the sum of its proper divisors (1).

45220013 is an equidigital number, since it uses as much as digits as its factorization.

45220013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 45220013 is about 6724.5827379846. The cubic root of 45220013 is about 356.2680644169.

Adding to 45220013 its reverse (31002254), we get a palindrome (76222267).

The spelling of 45220013 in words is "forty-five million, two hundred twenty thousand, thirteen".