5243530091 has 2 divisors, whose sum is σ = 5243530092. Its totient is φ = 5243530090.

The previous prime is 5243530013. The next prime is 5243530109. The reversal of 5243530091 is 1900353425.

Together with next prime (5243530109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5243530091 - 2³⁰ = 4169788267 is a prime.

It is not a weakly prime, because it can be changed into another prime (5243580091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621765045 + 2621765046.

It is an arithmetic number, because the mean of its divisors is an integer number (2621765046).

Almost surely, 2^5243530091 is an apocalyptic number.

5243530091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5243530091 is an equidigital number, since it uses as much as digits as its factorization.

5243530091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 5243530091 is about 72412.2233535195. The cubic root of 5243530091 is about 1737.2990741623.

The spelling of 5243530091 in words is "five billion, two hundred forty-three million, five hundred thirty thousand, ninety-one".