2117158 has 8 divisors (see below), whose sum is σ = 3253320. Its totient is φ = 1032720.

The previous prime is 2117147. The next prime is 2117179. The reversal of 2117158 is 8517112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12828 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (406665).

2^2117158 is an apocalyptic number.

2117158 is a deficient number, since it is larger than the sum of its proper divisors (1136162).

2117158 is a wasteful number, since it uses less digits than its factorization.

2117158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25862.

The product of its digits is 560, while the sum is 25.

The square root of 2117158 is about 1455.0457037495. The cubic root of 2117158 is about 128.4057356483.

It can be divided in two parts, 211715 and 8, that multiplied together give a triangular number (1693720 = T₁₈₄₀).

The spelling of 2117158 in words is "two million, one hundred seventeen thousand, one hundred fifty-eight".