255564073 has 2 divisors, whose sum is σ = 255564074. Its totient is φ = 255564072.

The previous prime is 255564011. The next prime is 255564083. The reversal of 255564073 is 370465552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250050969 + 5513104 = 15813^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 255564073 - 2¹⁷ = 255433001 is a prime.

It is not a weakly prime, because it can be changed into another prime (255564083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127782036 + 127782037.

It is an arithmetic number, because the mean of its divisors is an integer number (127782037).

Almost surely, 2^255564073 is an apocalyptic number.

It is an amenable number.

255564073 is a deficient number, since it is larger than the sum of its proper divisors (1).

255564073 is an equidigital number, since it uses as much as digits as its factorization.

255564073 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 255564073 is about 15986.3714769800. The cubic root of 255564073 is about 634.5998040510.

The spelling of 255564073 in words is "two hundred fifty-five million, five hundred sixty-four thousand, seventy-three".