256362539 has 4 divisors (see below), whose sum is σ = 256433256. Its totient is φ = 256291824.

The previous prime is 256362521. The next prime is 256362541. The reversal of 256362539 is 935263652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256362539 - 2⁸ = 256362283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256362496 and 256362505.

It is not an unprimeable number, because it can be changed into a prime (256302539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29609 + ... + 37274.

It is an arithmetic number, because the mean of its divisors is an integer number (64108314).

Almost surely, 2^256362539 is an apocalyptic number.

256362539 is a deficient number, since it is larger than the sum of its proper divisors (70717).

256362539 is an equidigital number, since it uses as much as digits as its factorization.

256362539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70716.

The product of its digits is 291600, while the sum is 41.

The square root of 256362539 is about 16011.3253355242. The cubic root of 256362539 is about 635.2600162757.

The spelling of 256362539 in words is "two hundred fifty-six million, three hundred sixty-two thousand, five hundred thirty-nine".