163255261 has 8 divisors (see below), whose sum is σ = 176196384. Its totient is φ = 150368880.

The previous prime is 163255259. The next prime is 163255271. The reversal of 163255261 is 162552361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163255261 - 2¹ = 163255259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163255231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7375 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (22024548).

Almost surely, 2^163255261 is an apocalyptic number.

It is an amenable number.

163255261 is a deficient number, since it is larger than the sum of its proper divisors (12941123).

163255261 is a wasteful number, since it uses less digits than its factorization.

163255261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27371.

The product of its digits is 10800, while the sum is 31.

The square root of 163255261 is about 12777.1382163613. The cubic root of 163255261 is about 546.5405571602.

The spelling of 163255261 in words is "one hundred sixty-three million, two hundred fifty-five thousand, two hundred sixty-one".