5645539 has 2 divisors, whose sum is σ = 5645540. Its totient is φ = 5645538.

The previous prime is 5645501. The next prime is 5645551. The reversal of 5645539 is 9355465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5645539 - 2¹³ = 5637347 is a prime.

It is a super-2 number, since 2×5645539² = 63744221201042, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁷ + 6⁴ + 4⁸ + 5⁹ + 5⁹ + 3¹³ + 9 .

5645539 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5645498 and 5645507.

It is not a weakly prime, because it can be changed into another prime (5645569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822769 + 2822770.

It is an arithmetic number, because the mean of its divisors is an integer number (2822770).

Almost surely, 2^5645539 is an apocalyptic number.

5645539 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645539 is an equidigital number, since it uses as much as digits as its factorization.

5645539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 37.

The square root of 5645539 is about 2376.0343010992. The cubic root of 5645539 is about 178.0608616522.

The spelling of 5645539 in words is "five million, six hundred forty-five thousand, five hundred thirty-nine".