2158711 has 8 divisors (see below), whose sum is σ = 2385504. Its totient is φ = 1943040.

The previous prime is 2158699. The next prime is 2158721. The reversal of 2158711 is 1178512.

2158711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2158711 - 2⁵ = 2158679 is a prime.

It is a Duffinian number.

2158711 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2370 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (298188).

2^2158711 is an apocalyptic number.

2158711 is a deficient number, since it is larger than the sum of its proper divisors (226793).

2158711 is a wasteful number, since it uses less digits than its factorization.

2158711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561.

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

The square root of 2158711 is about 1469.2552535213. The cubic root of 2158711 is about 129.2403627083.

The spelling of 2158711 in words is "two million, one hundred fifty-eight thousand, seven hundred eleven".