255844013 has 2 divisors, whose sum is σ = 255844014. Its totient is φ = 255844012.

The previous prime is 255843979. The next prime is 255844073. The reversal of 255844013 is 310448552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232928644 + 22915369 = 15262^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 255844013 - 2¹⁰ = 255842989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255844073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127922006 + 127922007.

It is an arithmetic number, because the mean of its divisors is an integer number (127922007).

Almost surely, 2^255844013 is an apocalyptic number.

It is an amenable number.

255844013 is a deficient number, since it is larger than the sum of its proper divisors (1).

255844013 is an equidigital number, since it uses as much as digits as its factorization.

255844013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 255844013 is about 15995.1246634717. The cubic root of 255844013 is about 634.8314289970.

The spelling of 255844013 in words is "two hundred fifty-five million, eight hundred forty-four thousand, thirteen".