255042493 has 2 divisors, whose sum is σ = 255042494. Its totient is φ = 255042492.

The previous prime is 255042481. The next prime is 255042521. The reversal of 255042493 is 394240552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254785444 + 257049 = 15962^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 255042493 - 2⁹ = 255041981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255042433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127521246 + 127521247.

It is an arithmetic number, because the mean of its divisors is an integer number (127521247).

Almost surely, 2^255042493 is an apocalyptic number.

It is an amenable number.

255042493 is a deficient number, since it is larger than the sum of its proper divisors (1).

255042493 is an equidigital number, since it uses as much as digits as its factorization.

255042493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 255042493 is about 15970.0498746873. The cubic root of 255042493 is about 634.1677923669.

The spelling of 255042493 in words is "two hundred fifty-five million, forty-two thousand, four hundred ninety-three".