45020543 has 2 divisors, whose sum is σ = 45020544. Its totient is φ = 45020542.

The previous prime is 45020509. The next prime is 45020551. The reversal of 45020543 is 34502054.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45020543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45020243) 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, 22510271 + 22510272.

It is an arithmetic number, because the mean of its divisors is an integer number (22510272).

Almost surely, 2^45020543 is an apocalyptic number.

45020543 is a deficient number, since it is larger than the sum of its proper divisors (1).

45020543 is an equidigital number, since it uses as much as digits as its factorization.

45020543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 45020543 is about 6709.7349426039. The cubic root of 45020543 is about 355.7434475920.

Adding to 45020543 its reverse (34502054), we get a palindrome (79522597).

The spelling of 45020543 in words is "forty-five million, twenty thousand, five hundred forty-three".