256900471 has 2 divisors, whose sum is σ = 256900472. Its totient is φ = 256900470.

The previous prime is 256900459. The next prime is 256900499. The reversal of 256900471 is 174009652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256900471 - 2¹¹ = 256898423 is a prime.

It is a super-3 number, since 3×256900471³ (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 (256900771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128450235 + 128450236.

It is an arithmetic number, because the mean of its divisors is an integer number (128450236).

Almost surely, 2^256900471 is an apocalyptic number.

256900471 is a deficient number, since it is larger than the sum of its proper divisors (1).

256900471 is an equidigital number, since it uses as much as digits as its factorization.

256900471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 256900471 is about 16028.1150170567. The cubic root of 256900471 is about 635.7040332431.

The spelling of 256900471 in words is "two hundred fifty-six million, nine hundred thousand, four hundred seventy-one".