2045539 has 2 divisors, whose sum is σ = 2045540. Its totient is φ = 2045538.

The previous prime is 2045509. The next prime is 2045543. The reversal of 2045539 is 9355402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2045539 - 2¹¹ = 2043491 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2045509) 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, 1022769 + 1022770.

It is an arithmetic number, because the mean of its divisors is an integer number (1022770).

2^2045539 is an apocalyptic number.

2045539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045539 is an equidigital number, since it uses as much as digits as its factorization.

2045539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2045539 is about 1430.2234091218. The cubic root of 2045539 is about 126.9411966596.

The spelling of 2045539 in words is "two million, forty-five thousand, five hundred thirty-nine".