205540522 has 24 divisors (see below), whose sum is σ = 340101216. Its totient is φ = 93093000.

The previous prime is 205540493. The next prime is 205540547. The reversal of 205540522 is 225045502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73897 + ... + 76627.

It is an arithmetic number, because the mean of its divisors is an integer number (14170884).

Almost surely, 2^205540522 is an apocalyptic number.

205540522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205540522 is a deficient number, since it is larger than the sum of its proper divisors (134560694).

205540522 is a wasteful number, since it uses less digits than its factorization.

205540522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 205540522 is about 14336.6844842174. The cubic root of 205540522 is about 590.1546295845.

The spelling of 205540522 in words is "two hundred five million, five hundred forty thousand, five hundred twenty-two".