611255 has 4 divisors (see below), whose sum is σ = 733512. Its totient is φ = 489000.

The previous prime is 611213. The next prime is 611257. The reversal of 611255 is 552116.

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

It is a de Polignac number, because none of the positive numbers 2^k-611255 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611257) 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, 61121 + ... + 61130.

It is an arithmetic number, because the mean of its divisors is an integer number (183378).

2⁶¹¹²⁵⁵ is an apocalyptic number.

611255 is a deficient number, since it is larger than the sum of its proper divisors (122257).

611255 is a wasteful number, since it uses less digits than its factorization.

611255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122256.

The product of its digits is 300, while the sum is 20.

The square root of 611255 is about 781.8279861965. The cubic root of 611255 is about 84.8673825860.

The spelling of 611255 in words is "six hundred eleven thousand, two hundred fifty-five".