255381587 has 2 divisors, whose sum is σ = 255381588. Its totient is φ = 255381586.

The previous prime is 255381551. The next prime is 255381593. The reversal of 255381587 is 785183552.

255381587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255381587 - 2⁸ = 255381331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (255321587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127690793 + 127690794.

It is an arithmetic number, because the mean of its divisors is an integer number (127690794).

Almost surely, 2^255381587 is an apocalyptic number.

255381587 is a deficient number, since it is larger than the sum of its proper divisors (1).

255381587 is an equidigital number, since it uses as much as digits as its factorization.

255381587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336000, while the sum is 44.

The square root of 255381587 is about 15980.6629086531. The cubic root of 255381587 is about 634.4487223631.

The spelling of 255381587 in words is "two hundred fifty-five million, three hundred eighty-one thousand, five hundred eighty-seven".