45202521449 has 2 divisors, whose sum is σ = 45202521450. Its totient is φ = 45202521448.

The previous prime is 45202521431. The next prime is 45202521509. The reversal of 45202521449 is 94412520254.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45159225049 + 43296400 = 212507^2 + 6580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45202521449 is a prime.

It is not a weakly prime, because it can be changed into another prime (45202521409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22601260724 + 22601260725.

It is an arithmetic number, because the mean of its divisors is an integer number (22601260725).

Almost surely, 2^45202521449 is an apocalyptic number.

It is an amenable number.

45202521449 is a deficient number, since it is larger than the sum of its proper divisors (1).

45202521449 is an equidigital number, since it uses as much as digits as its factorization.

45202521449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 45202521449 in words is "forty-five billion, two hundred two million, five hundred twenty-one thousand, four hundred forty-nine".