5251121723 has 2 divisors, whose sum is σ = 5251121724. Its totient is φ = 5251121722.

The previous prime is 5251121693. The next prime is 5251121737. The reversal of 5251121723 is 3271211525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5251121723 - 2³² = 956154427 is a prime.

It is not a weakly prime, because it can be changed into another prime (5251121753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625560861 + 2625560862.

It is an arithmetic number, because the mean of its divisors is an integer number (2625560862).

Almost surely, 2^5251121723 is an apocalyptic number.

5251121723 is a deficient number, since it is larger than the sum of its proper divisors (1).

5251121723 is an equidigital number, since it uses as much as digits as its factorization.

5251121723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 5251121723 is about 72464.6239416172. The cubic root of 5251121723 is about 1738.1370958201.

The spelling of 5251121723 in words is "five billion, two hundred fifty-one million, one hundred twenty-one thousand, seven hundred twenty-three".