204001055 has 16 divisors (see below), whose sum is σ = 252387360. Its totient is φ = 158220288.

The previous prime is 204001013. The next prime is 204001067. The reversal of 204001055 is 550100402.

It is a cyclic number.

It is not a de Polignac number, because 204001055 - 2¹⁰ = 204000031 is a prime.

It is a super-2 number, since 2×204001055² = 83232860882226050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16799 + ... + 26271.

It is an arithmetic number, because the mean of its divisors is an integer number (15774210).

Almost surely, 2^204001055 is an apocalyptic number.

204001055 is a deficient number, since it is larger than the sum of its proper divisors (48386305).

204001055 is an equidigital number, since it uses as much as digits as its factorization.

204001055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 204001055 is about 14282.8937894252. The cubic root of 204001055 is about 588.6775464803.

Adding to 204001055 its reverse (550100402), we get a palindrome (754101457).

The spelling of 204001055 in words is "two hundred four million, one thousand, fifty-five".