45020839 has 2 divisors, whose sum is σ = 45020840. Its totient is φ = 45020838.

The previous prime is 45020837. The next prime is 45020863. The reversal of 45020839 is 93802054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45020839 - 2¹ = 45020837 is a prime.

Together with 45020837, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 45020839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45020837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22510419 + 22510420.

It is an arithmetic number, because the mean of its divisors is an integer number (22510420).

Almost surely, 2^45020839 is an apocalyptic number.

45020839 is a deficient number, since it is larger than the sum of its proper divisors (1).

45020839 is an equidigital number, since it uses as much as digits as its factorization.

45020839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 45020839 is about 6709.7570000709. The cubic root of 45020839 is about 355.7442272348.

The spelling of 45020839 in words is "forty-five million, twenty thousand, eight hundred thirty-nine".