201543136 has 24 divisors (see below), whose sum is σ = 398505744. Its totient is φ = 100335360.

The previous prime is 201543103. The next prime is 201543149. The reversal of 201543136 is 631345102.

It is a self number, because there is not a number n which added to its sum of digits gives 201543136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060 + ... + 20971.

It is an arithmetic number, because the mean of its divisors is an integer number (16604406).

Almost surely, 2^201543136 is an apocalyptic number.

It is an amenable number.

201543136 is a deficient number, since it is larger than the sum of its proper divisors (196962608).

201543136 is a wasteful number, since it uses less digits than its factorization.

201543136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27274 (or 27266 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 201543136 is about 14196.5888860670. The cubic root of 201543136 is about 586.3037482223.

Adding to 201543136 its reverse (631345102), we get a palindrome (832888238).

The spelling of 201543136 in words is "two hundred one million, five hundred forty-three thousand, one hundred thirty-six".