255558111 has 4 divisors (see below), whose sum is σ = 340744152. Its totient is φ = 170372072.

The previous prime is 255558101. The next prime is 255558119. The reversal of 255558111 is 111855552.

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 255558111 - 2⁷ = 255557983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255558119) 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, 42593016 + ... + 42593021.

It is an arithmetic number, because the mean of its divisors is an integer number (85186038).

Almost surely, 2^255558111 is an apocalyptic number.

255558111 is a deficient number, since it is larger than the sum of its proper divisors (85186041).

255558111 is an equidigital number, since it uses as much as digits as its factorization.

255558111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85186040.

The product of its digits is 10000, while the sum is 33.

The square root of 255558111 is about 15986.1850045594. The cubic root of 255558111 is about 634.5948691979.

The spelling of 255558111 in words is "two hundred fifty-five million, five hundred fifty-eight thousand, one hundred eleven".