201161115 has 12 divisors (see below), whose sum is σ = 348679344. Its totient is φ = 107285904.

The previous prime is 201161089. The next prime is 201161123. The reversal of 201161115 is 511161102.

It is a happy number.

It is not a de Polignac number, because 201161115 - 2⁵ = 201161083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2235079 + ... + 2235168.

It is an arithmetic number, because the mean of its divisors is an integer number (29056612).

Almost surely, 2^201161115 is an apocalyptic number.

201161115 is a deficient number, since it is larger than the sum of its proper divisors (147518229).

201161115 is a wasteful number, since it uses less digits than its factorization.

201161115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470258 (or 4470255 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 201161115 is about 14183.1278285151. The cubic root of 201161115 is about 585.9330715612.

The spelling of 201161115 in words is "two hundred one million, one hundred sixty-one thousand, one hundred fifteen".