5125639 has 2 divisors, whose sum is σ = 5125640. Its totient is φ = 5125638.

The previous prime is 5125609. The next prime is 5125651. The reversal of 5125639 is 9365215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5125639 - 2⁷ = 5125511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5125639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5125609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2562819 + 2562820.

It is an arithmetic number, because the mean of its divisors is an integer number (2562820).

Almost surely, 2^5125639 is an apocalyptic number.

5125639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5125639 is an equidigital number, since it uses as much as digits as its factorization.

5125639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 5125639 is about 2263.9874116258. The cubic root of 5125639 is about 172.4180272850.

The spelling of 5125639 in words is "five million, one hundred twenty-five thousand, six hundred thirty-nine".