201540522 has 16 divisors (see below), whose sum is σ = 403223040. Its totient is φ = 67156512.

The previous prime is 201540499. The next prime is 201540539. The reversal of 201540522 is 225045102.

It is a happy number.

201540522 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 24823 + ... + 31925.

It is an arithmetic number, because the mean of its divisors is an integer number (25201440).

Almost surely, 2^201540522 is an apocalyptic number.

201540522 is an abundant number, since it is smaller than the sum of its proper divisors (201682518).

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

201540522 is a wasteful number, since it uses less digits than its factorization.

201540522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11837.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 201540522 is about 14196.4968213993. The cubic root of 201540522 is about 586.3012134389.

Adding to 201540522 its reverse (225045102), we get a palindrome (426585624).

The spelling of 201540522 in words is "two hundred one million, five hundred forty thousand, five hundred twenty-two".