5645534249 has 2 divisors, whose sum is σ = 5645534250. Its totient is φ = 5645534248.

The previous prime is 5645534243. The next prime is 5645534273. The reversal of 5645534249 is 9424355465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5558448025 + 87086224 = 74555^2 + 9332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5645534249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5645534243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822767124 + 2822767125.

It is an arithmetic number, because the mean of its divisors is an integer number (2822767125).

Almost surely, 2^5645534249 is an apocalyptic number.

It is an amenable number.

5645534249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645534249 is an equidigital number, since it uses as much as digits as its factorization.

5645534249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 47.

The square root of 5645534249 is about 75136.7702859259. The cubic root of 5645534249 is about 1780.6081170317.

The spelling of 5645534249 in words is "five billion, six hundred forty-five million, five hundred thirty-four thousand, two hundred forty-nine".