201535441 has 4 divisors (see below), whose sum is σ = 203384500. Its totient is φ = 199686384.

The previous prime is 201535429. The next prime is 201535457. The reversal of 201535441 is 144535102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141705216 + 59830225 = 11904^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 201535441 - 2¹¹ = 201533393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201535141) 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 3 ways as a sum of consecutive naturals, for example, 924366 + ... + 924583.

It is an arithmetic number, because the mean of its divisors is an integer number (50846125).

Almost surely, 2^201535441 is an apocalyptic number.

It is an amenable number.

201535441 is a deficient number, since it is larger than the sum of its proper divisors (1849059).

201535441 is a wasteful number, since it uses less digits than its factorization.

201535441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849058.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 201535441 is about 14196.3178676726. The cubic root of 201535441 is about 586.2962863544.

The spelling of 201535441 in words is "two hundred one million, five hundred thirty-five thousand, four hundred forty-one".