5645569 has 2 divisors, whose sum is σ = 5645570. Its totient is φ = 5645568.

The previous prime is 5645551. The next prime is 5645573. The reversal of 5645569 is 9655465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5382400 + 263169 = 2320^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645569 - 2¹⁵ = 5612801 is a prime.

It is a super-2 number, since 2×5645569² = 63744898667522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5645539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822784 + 2822785.

It is an arithmetic number, because the mean of its divisors is an integer number (2822785).

Almost surely, 2^5645569 is an apocalyptic number.

It is an amenable number.

5645569 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645569 is an equidigital number, since it uses as much as digits as its factorization.

5645569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 5645569 is about 2376.0406141310. The cubic root of 5645569 is about 178.0611770526.

The spelling of 5645569 in words is "five million, six hundred forty-five thousand, five hundred sixty-nine".