256214047 has 4 divisors (see below), whose sum is σ = 256284496. Its totient is φ = 256143600.

The previous prime is 256214033. The next prime is 256214051. The reversal of 256214047 is 740412652.

256214047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 256214047 - 2²⁷ = 121996319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256214017) 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, 29454 + ... + 37147.

It is an arithmetic number, because the mean of its divisors is an integer number (64071124).

Almost surely, 2^256214047 is an apocalyptic number.

256214047 is a deficient number, since it is larger than the sum of its proper divisors (70449).

256214047 is an equidigital number, since it uses as much as digits as its factorization.

256214047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70448.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 256214047 is about 16006.6875711373. The cubic root of 256214047 is about 635.1373394218.

Adding to 256214047 its reverse (740412652), we get a palindrome (996626699).

The spelling of 256214047 in words is "two hundred fifty-six million, two hundred fourteen thousand, forty-seven".