5643400253 has 2 divisors, whose sum is σ = 5643400254. Its totient is φ = 5643400252.

The previous prime is 5643400249. The next prime is 5643400271. The reversal of 5643400253 is 3520043465.

5643400253 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 can be written as a sum of positive squares in only one way, i.e., 2991871204 + 2651529049 = 54698^2 + 51493^2 .

It is a cyclic number.

It is not a de Polignac number, because 5643400253 - 2² = 5643400249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5643400283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821700126 + 2821700127.

It is an arithmetic number, because the mean of its divisors is an integer number (2821700127).

Almost surely, 2^5643400253 is an apocalyptic number.

It is an amenable number.

5643400253 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643400253 is an equidigital number, since it uses as much as digits as its factorization.

5643400253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 5643400253 is about 75122.5682002419. The cubic root of 5643400253 is about 1780.3837338109.

The spelling of 5643400253 in words is "five billion, six hundred forty-three million, four hundred thousand, two hundred fifty-three".