201449513 has 4 divisors (see below), whose sum is σ = 202137348. Its totient is φ = 200761680.

The previous prime is 201449509. The next prime is 201449543. The reversal of 201449513 is 315944102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315944102 = 2 ⋅157972051.

It can be written as a sum of positive squares in 2 ways, for example, as 147088384 + 54361129 = 12128^2 + 7373^2 .

It is a cyclic number.

It is not a de Polignac number, because 201449513 - 2² = 201449509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201449543) 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, 343478 + ... + 344063.

It is an arithmetic number, because the mean of its divisors is an integer number (50534337).

Almost surely, 2^201449513 is an apocalyptic number.

It is an amenable number.

201449513 is a deficient number, since it is larger than the sum of its proper divisors (687835).

201449513 is an equidigital number, since it uses as much as digits as its factorization.

201449513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687834.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 201449513 is about 14193.2911264442. The cubic root of 201449513 is about 586.2129487725.

The spelling of 201449513 in words is "two hundred one million, four hundred forty-nine thousand, five hundred thirteen".