201156 has 12 divisors (see below), whose sum is σ = 469392. Its totient is φ = 67048.

The previous prime is 201151. The next prime is 201163. The reversal of 201156 is 651102.

201156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201156.

It is not an unprimeable number, because it can be changed into a prime (201151) 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, 8370 + ... + 8393.

It is an arithmetic number, because the mean of its divisors is an integer number (39116).

2²⁰¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

201156 is an abundant number, since it is smaller than the sum of its proper divisors (268236).

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

201156 is a wasteful number, since it uses less digits than its factorization.

201156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770 (or 16768 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 201156 is about 448.5041805825. The cubic root of 201156 is about 58.5928105272.

Adding to 201156 its reverse (651102), we get a palindrome (852258).

It can be divided in two parts, 20 and 1156, that added together give a triangular number (1176 = T₄₈).

The spelling of 201156 in words is "two hundred one thousand, one hundred fifty-six".