2097543 has 24 divisors (see below), whose sum is σ = 3429120. Its totient is φ = 1134000.

The previous prime is 2097539. The next prime is 2097559. The reversal of 2097543 is 3457902.

It is not a de Polignac number, because 2097543 - 2² = 2097539 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2097543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2097503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2418 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (142880).

2^2097543 is an apocalyptic number.

2097543 is a deficient number, since it is larger than the sum of its proper divisors (1331577).

2097543 is a wasteful number, since it uses less digits than its factorization.

2097543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2097543 is about 1448.2896809686. The cubic root of 2097543 is about 128.0079544210.

The spelling of 2097543 in words is "two million, ninety-seven thousand, five hundred forty-three".