5123639 has 2 divisors, whose sum is σ = 5123640. Its totient is φ = 5123638.

The previous prime is 5123627. The next prime is 5123683. The reversal of 5123639 is 9363215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5123639 - 2⁴ = 5123623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5122639) 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, 2561819 + 2561820.

It is an arithmetic number, because the mean of its divisors is an integer number (2561820).

Almost surely, 2^5123639 is an apocalyptic number.

5123639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5123639 is an equidigital number, since it uses as much as digits as its factorization.

5123639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 5123639 is about 2263.5456699612. The cubic root of 5123639 is about 172.3955988024.

The spelling of 5123639 in words is "five million, one hundred twenty-three thousand, six hundred thirty-nine".