201555204 has 12 divisors (see below), whose sum is σ = 470295504. Its totient is φ = 67185064.

The previous prime is 201555161. The next prime is 201555227. The reversal of 201555204 is 402555102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 8398122 + ... + 8398145.

It is an arithmetic number, because the mean of its divisors is an integer number (39191292).

Almost surely, 2^201555204 is an apocalyptic number.

It is an amenable number.

201555204 is an abundant number, since it is smaller than the sum of its proper divisors (268740300).

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

201555204 is a wasteful number, since it uses less digits than its factorization.

201555204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16796274 (or 16796272 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 201555204 is about 14197.0139113829. The cubic root of 201555204 is about 586.3154502208.

The spelling of 201555204 in words is "two hundred one million, five hundred fifty-five thousand, two hundred four".