155255017 has 2 divisors, whose sum is σ = 155255018. Its totient is φ = 155255016.

The previous prime is 155255011. The next prime is 155255027. The reversal of 155255017 is 710552551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85766121 + 69488896 = 9261^2 + 8336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155255017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155255017.

It is not a weakly prime, because it can be changed into another prime (155255011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77627508 + 77627509.

It is an arithmetic number, because the mean of its divisors is an integer number (77627509).

Almost surely, 2^155255017 is an apocalyptic number.

It is an amenable number.

155255017 is a deficient number, since it is larger than the sum of its proper divisors (1).

155255017 is an equidigital number, since it uses as much as digits as its factorization.

155255017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8750, while the sum is 31.

The square root of 155255017 is about 12460.1371180256. The cubic root of 155255017 is about 537.4629700107.

The spelling of 155255017 in words is "one hundred fifty-five million, two hundred fifty-five thousand, seventeen".