255471187 has 2 divisors, whose sum is σ = 255471188. Its totient is φ = 255471186.

The previous prime is 255471157. The next prime is 255471211. The reversal of 255471187 is 781174552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255471187 - 2⁷ = 255471059 is a prime.

It is not a weakly prime, because it can be changed into another prime (255471157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127735593 + 127735594.

It is an arithmetic number, because the mean of its divisors is an integer number (127735594).

Almost surely, 2^255471187 is an apocalyptic number.

255471187 is a deficient number, since it is larger than the sum of its proper divisors (1).

255471187 is an equidigital number, since it uses as much as digits as its factorization.

255471187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78400, while the sum is 40.

The square root of 255471187 is about 15983.4660508915. The cubic root of 255471187 is about 634.5229119440.

The spelling of 255471187 in words is "two hundred fifty-five million, four hundred seventy-one thousand, one hundred eighty-seven".