255117029 has 2 divisors, whose sum is σ = 255117030. Its totient is φ = 255117028.

The previous prime is 255117013. The next prime is 255117043. The reversal of 255117029 is 920711552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238084900 + 17032129 = 15430^2 + 4127^2 .

It is a cyclic number.

It is not a de Polignac number, because 255117029 - 2⁴ = 255117013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255116986 and 255117004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255117329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127558514 + 127558515.

It is an arithmetic number, because the mean of its divisors is an integer number (127558515).

Almost surely, 2^255117029 is an apocalyptic number.

It is an amenable number.

255117029 is a deficient number, since it is larger than the sum of its proper divisors (1).

255117029 is an equidigital number, since it uses as much as digits as its factorization.

255117029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 255117029 is about 15972.3833224726. The cubic root of 255117029 is about 634.2295647223.

The spelling of 255117029 in words is "two hundred fifty-five million, one hundred seventeen thousand, twenty-nine".