255605743 has 2 divisors, whose sum is σ = 255605744. Its totient is φ = 255605742.

The previous prime is 255605741. The next prime is 255605747. The reversal of 255605743 is 347506552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255605743 - 2¹ = 255605741 is a prime.

Together with 255605741, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255605741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127802871 + 127802872.

It is an arithmetic number, because the mean of its divisors is an integer number (127802872).

Almost surely, 2^255605743 is an apocalyptic number.

255605743 is a deficient number, since it is larger than the sum of its proper divisors (1).

255605743 is an equidigital number, since it uses as much as digits as its factorization.

255605743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 255605743 is about 15987.6747214847. The cubic root of 255605743 is about 634.6342929060.

The spelling of 255605743 in words is "two hundred fifty-five million, six hundred five thousand, seven hundred forty-three".