205522513 has 8 divisors (see below), whose sum is σ = 239676800. Its totient is φ = 176161860.

The previous prime is 205522477. The next prime is 205522519. The reversal of 205522513 is 315225502.

It is a happy number.

It is not a de Polignac number, because 205522513 - 2⁹ = 205522001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205522519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299253 + ... + 299938.

It is an arithmetic number, because the mean of its divisors is an integer number (29959600).

Almost surely, 2^205522513 is an apocalyptic number.

It is an amenable number.

205522513 is a deficient number, since it is larger than the sum of its proper divisors (34154287).

205522513 is an frugal number, since it uses more digits than its factorization.

205522513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599212 (or 599198 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 205522513 is about 14336.0563963734. The cubic root of 205522513 is about 590.1373930723.

The spelling of 205522513 in words is "two hundred five million, five hundred twenty-two thousand, five hundred thirteen".