5251123543 has 2 divisors, whose sum is σ = 5251123544. Its totient is φ = 5251123542.

The previous prime is 5251123541. The next prime is 5251123571. The reversal of 5251123543 is 3453211525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5251123543 - 2¹ = 5251123541 is a prime.

Together with 5251123541, 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 (5251123541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625561771 + 2625561772.

It is an arithmetic number, because the mean of its divisors is an integer number (2625561772).

Almost surely, 2^5251123543 is an apocalyptic number.

5251123543 is a deficient number, since it is larger than the sum of its proper divisors (1).

5251123543 is an equidigital number, since it uses as much as digits as its factorization.

5251123543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

The square root of 5251123543 is about 72464.6364994678. The cubic root of 5251123543 is about 1738.1372966285.

The spelling of 5251123543 in words is "five billion, two hundred fifty-one million, one hundred twenty-three thousand, five hundred forty-three".