201317545 has 16 divisors (see below), whose sum is σ = 283816512. Its totient is φ = 135149760.

The previous prime is 201317537. The next prime is 201317561. The reversal of 201317545 is 545713102.

It is a happy number.

It is not a de Polignac number, because 201317545 - 2³ = 201317537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140067 + ... + 141496.

It is an arithmetic number, because the mean of its divisors is an integer number (17738532).

Almost surely, 2^201317545 is an apocalyptic number.

It is an amenable number.

201317545 is a deficient number, since it is larger than the sum of its proper divisors (82498967).

201317545 is a wasteful number, since it uses less digits than its factorization.

201317545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281592.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 201317545 is about 14188.6414078304. The cubic root of 201317545 is about 586.0849129711.

The spelling of 201317545 in words is "two hundred one million, three hundred seventeen thousand, five hundred forty-five".