205541004 has 24 divisors (see below), whose sum is σ = 479969280. Its totient is φ = 68460304.

The previous prime is 205540997. The next prime is 205541023. The reversal of 205541004 is 400145502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11317 + ... + 23219.

It is an arithmetic number, because the mean of its divisors is an integer number (19998720).

Almost surely, 2^205541004 is an apocalyptic number.

It is an amenable number.

205541004 is an abundant number, since it is smaller than the sum of its proper divisors (274428276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205541004 is a wasteful number, since it uses less digits than its factorization.

205541004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13349 (or 13347 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 205541004 is about 14336.7012942308. The cubic root of 205541004 is about 590.1550908955.

Adding to 205541004 its reverse (400145502), we get a palindrome (605686506).

The spelling of 205541004 in words is "two hundred five million, five hundred forty-one thousand, four".