255117013 has 2 divisors, whose sum is σ = 255117014. Its totient is φ = 255117012.

The previous prime is 255116957. The next prime is 255117029. The reversal of 255117013 is 310711552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245642929 + 9474084 = 15673^2 + 3078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255117013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255117043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127558506 + 127558507.

It is an arithmetic number, because the mean of its divisors is an integer number (127558507).

Almost surely, 2^255117013 is an apocalyptic number.

It is an amenable number.

255117013 is a deficient number, since it is larger than the sum of its proper divisors (1).

255117013 is an equidigital number, since it uses as much as digits as its factorization.

255117013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 255117013 is about 15972.3828216081. The cubic root of 255117013 is about 634.2295514635.

Adding to 255117013 its reverse (310711552), we get a palindrome (565828565).

The spelling of 255117013 in words is "two hundred fifty-five million, one hundred seventeen thousand, thirteen".