5257961749 has 2 divisors, whose sum is σ = 5257961750. Its totient is φ = 5257961748.

The previous prime is 5257961743. The next prime is 5257961791. The reversal of 5257961749 is 9471697525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4183761124 + 1074200625 = 64682^2 + 32775^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257961749 - 2¹⁵ = 5257928981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5257961749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5257961743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628980874 + 2628980875.

It is an arithmetic number, because the mean of its divisors is an integer number (2628980875).

Almost surely, 2^5257961749 is an apocalyptic number.

It is an amenable number.

5257961749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257961749 is an equidigital number, since it uses as much as digits as its factorization.

5257961749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 55.

The square root of 5257961749 is about 72511.8042045569. The cubic root of 5257961749 is about 1738.8914581061.

The spelling of 5257961749 in words is "five billion, two hundred fifty-seven million, nine hundred sixty-one thousand, seven hundred forty-nine".