255106987 has 2 divisors, whose sum is σ = 255106988. Its totient is φ = 255106986.

The previous prime is 255106949. The next prime is 255106991. The reversal of 255106987 is 789601552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255106987 - 2¹⁵ = 255074219 is a prime.

It is not a weakly prime, because it can be changed into another prime (255106937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127553493 + 127553494.

It is an arithmetic number, because the mean of its divisors is an integer number (127553494).

Almost surely, 2^255106987 is an apocalyptic number.

255106987 is a deficient number, since it is larger than the sum of its proper divisors (1).

255106987 is an equidigital number, since it uses as much as digits as its factorization.

255106987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 255106987 is about 15972.0689642889. The cubic root of 255106987 is about 634.2212430292.

The spelling of 255106987 in words is "two hundred fifty-five million, one hundred six thousand, nine hundred eighty-seven".