201145156 has 36 divisors (see below), whose sum is σ = 376298496. Its totient is φ = 94057600.

The previous prime is 201145151. The next prime is 201145163. The reversal of 201145156 is 651541102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201145156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201145151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220341 + ... + 221251.

It is an arithmetic number, because the mean of its divisors is an integer number (10452736).

Almost surely, 2^201145156 is an apocalyptic number.

It is an amenable number.

201145156 is a deficient number, since it is larger than the sum of its proper divisors (175153340).

201145156 is a wasteful number, since it uses less digits than its factorization.

201145156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 201145156 is about 14182.5652122597. The cubic root of 201145156 is about 585.9175762650.

Adding to 201145156 its reverse (651541102), we get a palindrome (852686258).

The spelling of 201145156 in words is "two hundred one million, one hundred forty-five thousand, one hundred fifty-six".