2158497 has 12 divisors (see below), whose sum is σ = 3401424. Its totient is φ = 1308120.

The previous prime is 2158483. The next prime is 2158501. The reversal of 2158497 is 7948512.

2158497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2158497 - 2⁶ = 2158433 is a prime.

It is a super-3 number, since 3×2158497³ = 30170020333749088419, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2158427) 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 11 ways as a sum of consecutive naturals, for example, 10803 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (283452).

2^2158497 is an apocalyptic number.

It is an amenable number.

2158497 is a deficient number, since it is larger than the sum of its proper divisors (1242927).

2158497 is a wasteful number, since it uses less digits than its factorization.

2158497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21820 (or 21817 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2158497 is about 1469.1824257049. The cubic root of 2158497 is about 129.2360918955.

The spelling of 2158497 in words is "two million, one hundred fifty-eight thousand, four hundred ninety-seven".