6256139 has 2 divisors, whose sum is σ = 6256140. Its totient is φ = 6256138.

The previous prime is 6256127. The next prime is 6256169. The reversal of 6256139 is 9316526.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6256139 - 2²⁰ = 5207563 is a prime.

It is not a weakly prime, because it can be changed into another prime (6256109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128069 + 3128070.

It is an arithmetic number, because the mean of its divisors is an integer number (3128070).

Almost surely, 2^6256139 is an apocalyptic number.

6256139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6256139 is an equidigital number, since it uses as much as digits as its factorization.

6256139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 6256139 is about 2501.2274986494. The cubic root of 6256139 is about 184.2618652481.

The spelling of 6256139 in words is "six million, two hundred fifty-six thousand, one hundred thirty-nine".