201855512 has 16 divisors (see below), whose sum is σ = 383664840. Its totient is φ = 99544896.

The previous prime is 201855509. The next prime is 201855517. The reversal of 201855512 is 215558102.

201855512 is digitally balanced in base 3, 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 (201855517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172238 + ... + 173405.

Almost surely, 2^201855512 is an apocalyptic number.

It is an amenable number.

201855512 is a deficient number, since it is larger than the sum of its proper divisors (181809328).

201855512 is a wasteful number, since it uses less digits than its factorization.

201855512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345722 (or 345718 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 201855512 is about 14207.5864241609. The cubic root of 201855512 is about 586.6065000855.

The spelling of 201855512 in words is "two hundred one million, eight hundred fifty-five thousand, five hundred twelve".