5645533391 has 2 divisors, whose sum is σ = 5645533392. Its totient is φ = 5645533390.

The previous prime is 5645533373. The next prime is 5645533423. The reversal of 5645533391 is 1933355465.

It is a happy number.

5645533391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5645533391 - 2²² = 5641339087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5645533301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822766695 + 2822766696.

It is an arithmetic number, because the mean of its divisors is an integer number (2822766696).

Almost surely, 2^5645533391 is an apocalyptic number.

5645533391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645533391 is an equidigital number, since it uses as much as digits as its factorization.

5645533391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729000, while the sum is 44.

The square root of 5645533391 is about 75136.7645763377. The cubic root of 5645533391 is about 1780.6080268269.

The spelling of 5645533391 in words is "five billion, six hundred forty-five million, five hundred thirty-three thousand, three hundred ninety-one".