255106505 has 8 divisors (see below), whose sum is σ = 324135432. Its totient is φ = 192080128.

The previous prime is 255106499. The next prime is 255106513. The reversal of 255106505 is 505601552.

It can be written as a sum of positive squares in 4 ways, for example, as 114233344 + 140873161 = 10688^2 + 11869^2 .

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 255106505 - 2⁶ = 255106441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500542 + ... + 1500711.

It is an arithmetic number, because the mean of its divisors is an integer number (40516929).

Almost surely, 2^255106505 is an apocalyptic number.

It is an amenable number.

255106505 is a deficient number, since it is larger than the sum of its proper divisors (69028927).

255106505 is a wasteful number, since it uses less digits than its factorization.

255106505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001275.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 255106505 is about 15972.0538754413. The cubic root of 255106505 is about 634.2208435957.

The spelling of 255106505 in words is "two hundred fifty-five million, one hundred six thousand, five hundred five".