2117081 has 8 divisors (see below), whose sum is σ = 2237760. Its totient is φ = 1998832.

The previous prime is 2117077. The next prime is 2117099. The reversal of 2117081 is 1807112.

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

It is a cyclic number.

It is not a de Polignac number, because 2117081 - 2² = 2117077 is a prime.

It is a super-2 number, since 2×2117081² = 8964063921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117041) 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, 1355 + ... + 2463.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

2^2117081 is an apocalyptic number.

It is an amenable number.

2117081 is a deficient number, since it is larger than the sum of its proper divisors (120679).

2117081 is a wasteful number, since it uses less digits than its factorization.

2117081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 2117081 is about 1455.0192438590. The cubic root of 2117081 is about 128.4041789448.

The spelling of 2117081 in words is "two million, one hundred seventeen thousand, eighty-one".