2205531 has 12 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 1463280.

The previous prime is 2205527. The next prime is 2205547. The reversal of 2205531 is 1355022.

It is a happy number.

It is not a de Polignac number, because 2205531 - 2² = 2205527 is a prime.

It is a super-2 number, since 2×2205531² = 9728733983922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2205521) 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, 1966 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (266760).

2^2205531 is an apocalyptic number.

2205531 is a deficient number, since it is larger than the sum of its proper divisors (995589).

2205531 is a wasteful number, since it uses less digits than its factorization.

2205531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2205531 is about 1485.1030267291. The cubic root of 2205531 is about 130.1680469771.

The spelling of 2205531 in words is "two million, two hundred five thousand, five hundred thirty-one".