5278510091 has 2 divisors, whose sum is σ = 5278510092. Its totient is φ = 5278510090.

The previous prime is 5278510073. The next prime is 5278510093. The reversal of 5278510091 is 1900158725.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5278510091 is a prime.

Together with 5278510093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5278510093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639255045 + 2639255046.

It is an arithmetic number, because the mean of its divisors is an integer number (2639255046).

Almost surely, 2^5278510091 is an apocalyptic number.

5278510091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278510091 is an equidigital number, since it uses as much as digits as its factorization.

5278510091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 5278510091 is about 72653.3556761145. The cubic root of 5278510091 is about 1741.1537346527.

The spelling of 5278510091 in words is "five billion, two hundred seventy-eight million, five hundred ten thousand, ninety-one".