201481745 has 4 divisors (see below), whose sum is σ = 241778100. Its totient is φ = 161185392.

The previous prime is 201481723. The next prime is 201481747. The reversal of 201481745 is 547184102.

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 142253329 + 59228416 = 11927^2 + 7696^2 .

It is a cyclic number.

It is not a de Polignac number, because 201481745 - 2¹⁴ = 201465361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201481747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20148170 + ... + 20148179.

It is an arithmetic number, because the mean of its divisors is an integer number (60444525).

Almost surely, 2^201481745 is an apocalyptic number.

It is an amenable number.

201481745 is a deficient number, since it is larger than the sum of its proper divisors (40296355).

201481745 is an equidigital number, since it uses as much as digits as its factorization.

201481745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40296354.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 201481745 is about 14194.4265470642. The cubic root of 201481745 is about 586.2442118713.

The spelling of 201481745 in words is "two hundred one million, four hundred eighty-one thousand, seven hundred forty-five".