255905183 has 4 divisors (see below), whose sum is σ = 256140408. Its totient is φ = 255669960.

The previous prime is 255905179. The next prime is 255905189. The reversal of 255905183 is 381509552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255905183 - 2² = 255905179 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255905189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115973 + ... + 118158.

It is an arithmetic number, because the mean of its divisors is an integer number (64035102).

Almost surely, 2^255905183 is an apocalyptic number.

255905183 is a deficient number, since it is larger than the sum of its proper divisors (235225).

255905183 is a wasteful number, since it uses less digits than its factorization.

255905183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235224.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 255905183 is about 15997.0366943381. The cubic root of 255905183 is about 634.8820191250.

The spelling of 255905183 in words is "two hundred fifty-five million, nine hundred five thousand, one hundred eighty-three".