5121439 has 2 divisors, whose sum is σ = 5121440. Its totient is φ = 5121438.

The previous prime is 5121421. The next prime is 5121463. The reversal of 5121439 is 9341215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5121439 - 2¹³ = 5113247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121419) 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, 2560719 + 2560720.

It is an arithmetic number, because the mean of its divisors is an integer number (2560720).

Almost surely, 2^5121439 is an apocalyptic number.

5121439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121439 is an equidigital number, since it uses as much as digits as its factorization.

5121439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 5121439 is about 2263.0596545385. The cubic root of 5121439 is about 172.3709207292.

The spelling of 5121439 in words is "five million, one hundred twenty-one thousand, four hundred thirty-nine".