7256539 has 2 divisors, whose sum is σ = 7256540. Its totient is φ = 7256538.

The previous prime is 7256533. The next prime is 7256581. The reversal of 7256539 is 9356527.

7256539 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7256539 - 2³ = 7256531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7256498 and 7256507.

It is not a weakly prime, because it can be changed into another prime (7256531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628269 + 3628270.

It is an arithmetic number, because the mean of its divisors is an integer number (3628270).

Almost surely, 2^7256539 is an apocalyptic number.

7256539 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256539 is an equidigital number, since it uses as much as digits as its factorization.

7256539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 37.

The square root of 7256539 is about 2693.7963917119. The cubic root of 7256539 is about 193.6020022759.

The spelling of 7256539 in words is "seven million, two hundred fifty-six thousand, five hundred thirty-nine".