5244157813 has 2 divisors, whose sum is σ = 5244157814. Its totient is φ = 5244157812.

The previous prime is 5244157781. The next prime is 5244157903. The reversal of 5244157813 is 3187514425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4086661329 + 1157496484 = 63927^2 + 34022^2 .

It is a cyclic number.

It is not a de Polignac number, because 5244157813 - 2⁵ = 5244157781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5244157313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2622078906 + 2622078907.

It is an arithmetic number, because the mean of its divisors is an integer number (2622078907).

Almost surely, 2^5244157813 is an apocalyptic number.

It is an amenable number.

5244157813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5244157813 is an equidigital number, since it uses as much as digits as its factorization.

5244157813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 5244157813 is about 72416.5575887172. The cubic root of 5244157813 is about 1737.3683975199.

The spelling of 5244157813 in words is "five billion, two hundred forty-four million, one hundred fifty-seven thousand, eight hundred thirteen".