45243481 has 2 divisors, whose sum is σ = 45243482. Its totient is φ = 45243480.

The previous prime is 45243463. The next prime is 45243487. The reversal of 45243481 is 18434254.

45243481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 10137856 = 5925^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 45243481 - 2⁵ = 45243449 is a prime.

It is a super-2 number, since 2×45243481² = 4093945145994722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45243487) 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, 22621740 + 22621741.

It is an arithmetic number, because the mean of its divisors is an integer number (22621741).

Almost surely, 2^45243481 is an apocalyptic number.

It is an amenable number.

45243481 is a deficient number, since it is larger than the sum of its proper divisors (1).

45243481 is an equidigital number, since it uses as much as digits as its factorization.

45243481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 45243481 is about 6726.3274526297. The cubic root of 45243481 is about 356.3296850168.

The spelling of 45243481 in words is "forty-five million, two hundred forty-three thousand, four hundred eighty-one".