201555006 has 16 divisors (see below), whose sum is σ = 403822848. Its totient is φ = 67066200.

The previous prime is 201555001. The next prime is 201555023. The reversal of 201555006 is 600555102.

201555006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201555001) 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, 25990 + ... + 32841.

It is an arithmetic number, because the mean of its divisors is an integer number (25238928).

Almost surely, 2^201555006 is an apocalyptic number.

201555006 is an abundant number, since it is smaller than the sum of its proper divisors (202267842).

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

201555006 is a wasteful number, since it uses less digits than its factorization.

201555006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59407.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 201555006 is about 14197.0069380838. The cubic root of 201555006 is about 586.3152582296.

The spelling of 201555006 in words is "two hundred one million, five hundred fifty-five thousand, six".