5666401253 has 2 divisors, whose sum is σ = 5666401254. Its totient is φ = 5666401252.

The previous prime is 5666401219. The next prime is 5666401259. The reversal of 5666401253 is 3521046665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3387007204 + 2279394049 = 58198^2 + 47743^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666401253 - 2⁸ = 5666400997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666401259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833200626 + 2833200627.

It is an arithmetic number, because the mean of its divisors is an integer number (2833200627).

Almost surely, 2^5666401253 is an apocalyptic number.

It is an amenable number.

5666401253 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666401253 is an equidigital number, since it uses as much as digits as its factorization.

5666401253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 5666401253 is about 75275.5023430598. The cubic root of 5666401253 is about 1782.7992454684.

The spelling of 5666401253 in words is "five billion, six hundred sixty-six million, four hundred one thousand, two hundred fifty-three".