2255531 has 4 divisors (see below), whose sum is σ = 2261952. Its totient is φ = 2249112.

The previous prime is 2255507. The next prime is 2255549. The reversal of 2255531 is 1355522.

2255531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2255531 - 2¹⁰ = 2254507 is a prime.

It is a super-2 number, since 2×2255531² = 10174840183922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2255497 and 2255506.

It is not an unprimeable number, because it can be changed into a prime (2255501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2651 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (565488).

2^2255531 is an apocalyptic number.

2255531 is a deficient number, since it is larger than the sum of its proper divisors (6421).

2255531 is an equidigital number, since it uses as much as digits as its factorization.

2255531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420.

The product of its digits is 1500, while the sum is 23.

The square root of 2255531 is about 1501.8425350216. The cubic root of 2255531 is about 131.1443545939.

Subtracting from 2255531 its reverse (1355522), we obtain a palindrome (900009).

The spelling of 2255531 in words is "two million, two hundred fifty-five thousand, five hundred thirty-one".