255619 has 12 divisors (see below), whose sum is σ = 320656. Its totient is φ = 198432.

The previous prime is 255617. The next prime is 255637. The reversal of 255619 is 916552.

It is not a de Polignac number, because 255619 - 2¹ = 255617 is a prime.

It is a super-2 number, since 2×255619² = 130682146322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4797 + ... + 4849.

2²⁵⁵⁶¹⁹ is an apocalyptic number.

255619 is a deficient number, since it is larger than the sum of its proper divisors (65037).

255619 is an equidigital number, since it uses as much as digits as its factorization.

255619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 73 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 255619 is about 505.5877767510. The cubic root of 255619 is about 63.4645264492.

The spelling of 255619 in words is "two hundred fifty-five thousand, six hundred nineteen".