5121839 has 2 divisors, whose sum is σ = 5121840. Its totient is φ = 5121838.

The previous prime is 5121833. The next prime is 5121841. The reversal of 5121839 is 9381215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5121839 is a prime.

Together with 5121841, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₃₅₆₃₆₆ and since 5121839 and 356366 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560919 + 2560920.

It is an arithmetic number, because the mean of its divisors is an integer number (2560920).

Almost surely, 2^5121839 is an apocalyptic number.

5121839 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121839 is an equidigital number, since it uses as much as digits as its factorization.

5121839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 5121839 is about 2263.1480287423. The cubic root of 5121839 is about 172.3754081772.

The spelling of 5121839 in words is "five million, one hundred twenty-one thousand, eight hundred thirty-nine".