201540535 has 16 divisors (see below), whose sum is σ = 278102016. Its totient is φ = 137347488.

The previous prime is 201540499. The next prime is 201540539. The reversal of 201540535 is 535045102.

It is a cyclic number.

It is not a de Polignac number, because 201540535 - 2⁷ = 201540407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201540539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11959 + ... + 23368.

It is an arithmetic number, because the mean of its divisors is an integer number (17381376).

Almost surely, 2^201540535 is an apocalyptic number.

201540535 is a deficient number, since it is larger than the sum of its proper divisors (76561481).

201540535 is a wasteful number, since it uses less digits than its factorization.

201540535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35502.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 201540535 is about 14196.4972792587. The cubic root of 201540535 is about 586.3012260449.

Adding to 201540535 its reverse (535045102), we get a palindrome (736585637).

The spelling of 201540535 in words is "two hundred one million, five hundred forty thousand, five hundred thirty-five".