201115601 has 8 divisors (see below), whose sum is σ = 209283360. Its totient is φ = 193106592.

The previous prime is 201115591. The next prime is 201115613. The reversal of 201115601 is 106511102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201115601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201115601.

It is not an unprimeable number, because it can be changed into a prime (201115501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37100 + ... + 42173.

It is an arithmetic number, because the mean of its divisors is an integer number (26160420).

Almost surely, 2^201115601 is an apocalyptic number.

It is an amenable number.

201115601 is a deficient number, since it is larger than the sum of its proper divisors (8167759).

201115601 is an equidigital number, since it uses as much as digits as its factorization.

201115601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79375.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 201115601 is about 14181.5232256623. The cubic root of 201115601 is about 585.8888778489. Note that the first 4 decimals are identical.

Adding to 201115601 its reverse (106511102), we get a palindrome (307626703).

The spelling of 201115601 in words is "two hundred one million, one hundred fifteen thousand, six hundred one".