256214471 has 2 divisors, whose sum is σ = 256214472. Its totient is φ = 256214470.

The previous prime is 256214417. The next prime is 256214479. The reversal of 256214471 is 174412652.

Together with previous prime (256214417) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256214471 - 2¹⁴ = 256198087 is a prime.

It is a super-3 number, since 3×256214471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256214479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128107235 + 128107236.

It is an arithmetic number, because the mean of its divisors is an integer number (128107236).

Almost surely, 2^256214471 is an apocalyptic number.

256214471 is a deficient number, since it is larger than the sum of its proper divisors (1).

256214471 is an equidigital number, since it uses as much as digits as its factorization.

256214471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 256214471 is about 16006.7008155959. The cubic root of 256214471 is about 635.1376897774.

The spelling of 256214471 in words is "two hundred fifty-six million, two hundred fourteen thousand, four hundred seventy-one".