255556471 has 2 divisors, whose sum is σ = 255556472. Its totient is φ = 255556470.

The previous prime is 255556451. The next prime is 255556487. The reversal of 255556471 is 174655552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255556471 - 2⁹ = 255555959 is a prime.

It is a super-3 number, since 3×255556471³ (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 (255556421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127778235 + 127778236.

It is an arithmetic number, because the mean of its divisors is an integer number (127778236).

Almost surely, 2^255556471 is an apocalyptic number.

255556471 is a deficient number, since it is larger than the sum of its proper divisors (1).

255556471 is an equidigital number, since it uses as much as digits as its factorization.

255556471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210000, while the sum is 40.

The square root of 255556471 is about 15986.1337101877. The cubic root of 255556471 is about 634.5935117274.

The spelling of 255556471 in words is "two hundred fifty-five million, five hundred fifty-six thousand, four hundred seventy-one".