2158594 has 4 divisors (see below), whose sum is σ = 3237894. Its totient is φ = 1079296.

The previous prime is 2158591. The next prime is 2158601. The reversal of 2158594 is 4958512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 18225 = 1463^2 + 135^2 .

It is not an unprimeable number, because it can be changed into a prime (2158591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539647 + ... + 539650.

2^2158594 is an apocalyptic number.

2158594 is a deficient number, since it is larger than the sum of its proper divisors (1079300).

2158594 is a wasteful number, since it uses less digits than its factorization.

2158594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079299.

The product of its digits is 14400, while the sum is 34.

The square root of 2158594 is about 1469.2154368914. The cubic root of 2158594 is about 129.2380277662.

The spelling of 2158594 in words is "two million, one hundred fifty-eight thousand, five hundred ninety-four".