255111513 has 4 divisors (see below), whose sum is σ = 340148688. Its totient is φ = 170074340.

The previous prime is 255111497. The next prime is 255111517. The reversal of 255111513 is 315111552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255111513 - 2⁴ = 255111497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255111517) 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, 42518583 + ... + 42518588.

It is an arithmetic number, because the mean of its divisors is an integer number (85037172).

Almost surely, 2^255111513 is an apocalyptic number.

It is an amenable number.

255111513 is a deficient number, since it is larger than the sum of its proper divisors (85037175).

255111513 is an equidigital number, since it uses as much as digits as its factorization.

255111513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85037174.

The product of its digits is 750, while the sum is 24.

The square root of 255111513 is about 15972.2106484982. The cubic root of 255111513 is about 634.2249937018.

The spelling of 255111513 in words is "two hundred fifty-five million, one hundred eleven thousand, five hundred thirteen".