11571255 has 20 divisors (see below), whose sum is σ = 20743272. Its totient is φ = 6171120.

The previous prime is 11571251. The next prime is 11571283. The reversal of 11571255 is 55217511.

It is not a de Polignac number, because 11571255 - 2² = 11571251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13881 + ... + 14690.

Almost surely, 2^11571255 is an apocalyptic number.

11571255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11571255 is a deficient number, since it is larger than the sum of its proper divisors (9172017).

11571255 is an equidigital number, since it uses as much as digits as its factorization.

11571255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28588 (or 28579 counting only the distinct ones).

The product of its digits is 1750, while the sum is 27.

The square root of 11571255 is about 3401.6547443854. The cubic root of 11571255 is about 226.1831014119.

Adding to 11571255 its reverse (55217511), we get a palindrome (66788766).

The spelling of 11571255 in words is "eleven million, five hundred seventy-one thousand, two hundred fifty-five".