5249286521 has 2 divisors, whose sum is σ = 5249286522. Its totient is φ = 5249286520.

The previous prime is 5249286487. The next prime is 5249286529. The reversal of 5249286521 is 1256829425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2929515625 + 2319770896 = 54125^2 + 48164^2 .

It is a cyclic number.

It is not a de Polignac number, because 5249286521 - 2²² = 5245092217 is a prime.

It is not a weakly prime, because it can be changed into another prime (5249286529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2624643260 + 2624643261.

It is an arithmetic number, because the mean of its divisors is an integer number (2624643261).

Almost surely, 2^5249286521 is an apocalyptic number.

It is an amenable number.

5249286521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5249286521 is an equidigital number, since it uses as much as digits as its factorization.

5249286521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 5249286521 is about 72451.9600908078. The cubic root of 5249286521 is about 1737.9345864314.

The spelling of 5249286521 in words is "five billion, two hundred forty-nine million, two hundred eighty-six thousand, five hundred twenty-one".