5247543109 has 2 divisors, whose sum is σ = 5247543110. Its totient is φ = 5247543108.

The previous prime is 5247543107. The next prime is 5247543121. The reversal of 5247543109 is 9013457425.

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., 3590646084 + 1656897025 = 59922^2 + 40705^2 .

It is a cyclic number.

It is not a de Polignac number, because 5247543109 - 2¹ = 5247543107 is a prime.

Together with 5247543107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5247543107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2623771554 + 2623771555.

It is an arithmetic number, because the mean of its divisors is an integer number (2623771555).

Almost surely, 2^5247543109 is an apocalyptic number.

It is an amenable number.

5247543109 is a deficient number, since it is larger than the sum of its proper divisors (1).

5247543109 is an equidigital number, since it uses as much as digits as its factorization.

5247543109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 5247543109 is about 72439.9275883128. The cubic root of 5247543109 is about 1737.7421620895.

The spelling of 5247543109 in words is "five billion, two hundred forty-seven million, five hundred forty-three thousand, one hundred nine".