45122813 has 2 divisors, whose sum is σ = 45122814. Its totient is φ = 45122812.

The previous prime is 45122807. The next prime is 45122851. The reversal of 45122813 is 31822154.

45122813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23990404 + 21132409 = 4898^2 + 4597^2 .

It is a cyclic number.

It is not a de Polignac number, because 45122813 - 2¹⁶ = 45057277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45122873) 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, 22561406 + 22561407.

It is an arithmetic number, because the mean of its divisors is an integer number (22561407).

Almost surely, 2^45122813 is an apocalyptic number.

It is an amenable number.

45122813 is a deficient number, since it is larger than the sum of its proper divisors (1).

45122813 is an equidigital number, since it uses as much as digits as its factorization.

45122813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 26.

The square root of 45122813 is about 6717.3516358756. The cubic root of 45122813 is about 356.0126163311.

Adding to 45122813 its reverse (31822154), we get a palindrome (76944967).

The spelling of 45122813 in words is "forty-five million, one hundred twenty-two thousand, eight hundred thirteen".