2005201855 has 8 divisors (see below), whose sum is σ = 2419686000. Its totient is φ = 1595198976.

The previous prime is 2005201853. The next prime is 2005201873. The reversal of 2005201855 is 5581025002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005201855 - 2¹ = 2005201853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005201853) 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, 1119330 + ... + 1121119.

It is an arithmetic number, because the mean of its divisors is an integer number (302460750).

Almost surely, 2^2005201855 is an apocalyptic number.

2005201855 is a deficient number, since it is larger than the sum of its proper divisors (414484145).

2005201855 is a wasteful number, since it uses less digits than its factorization.

2005201855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240633.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 2005201855 is about 44779.4802895255. The cubic root of 2005201855 is about 1261.0124253471.

Adding to 2005201855 its reverse (5581025002), we get a palindrome (7586226857).

The spelling of 2005201855 in words is "two billion, five million, two hundred one thousand, eight hundred fifty-five".