201055660 has 48 divisors (see below), whose sum is σ = 464397696. Its totient is φ = 72652032.

The previous prime is 201055633. The next prime is 201055667. The reversal of 201055660 is 66550102.

201055660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201055667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3994 + ... + 20446.

It is an arithmetic number, because the mean of its divisors is an integer number (9674952).

Almost surely, 2^201055660 is an apocalyptic number.

201055660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201055660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232198848).

201055660 is an abundant number, since it is smaller than the sum of its proper divisors (263342036).

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

201055660 is a wasteful number, since it uses less digits than its factorization.

201055660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16522 (or 16520 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 201055660 is about 14179.4097197309. The cubic root of 201055660 is about 585.8306654665.

The spelling of 201055660 in words is "two hundred one million, fifty-five thousand, six hundred sixty".