256588471 has 2 divisors, whose sum is σ = 256588472. Its totient is φ = 256588470.

The previous prime is 256588469. The next prime is 256588489. The reversal of 256588471 is 174885652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256588471 - 2¹ = 256588469 is a prime.

It is a super-3 number, since 3×256588471³ (a number of 26 digits) contains 333 as substring.

Together with 256588469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256588771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128294235 + 128294236.

It is an arithmetic number, because the mean of its divisors is an integer number (128294236).

Almost surely, 2^256588471 is an apocalyptic number.

256588471 is a deficient number, since it is larger than the sum of its proper divisors (1).

256588471 is an equidigital number, since it uses as much as digits as its factorization.

256588471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 46.

The square root of 256588471 is about 16018.3791626993. The cubic root of 256588471 is about 635.4465794455.

The spelling of 256588471 in words is "two hundred fifty-six million, five hundred eighty-eight thousand, four hundred seventy-one".