2097901 has 4 divisors (see below), whose sum is σ = 2259292. Its totient is φ = 1936512.

The previous prime is 2097883. The next prime is 2097911. The reversal of 2097901 is 1097902.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1334025 + 763876 = 1155^2 + 874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2097901 - 2¹¹ = 2095853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2097901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2097911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80676 + ... + 80701.

It is an arithmetic number, because the mean of its divisors is an integer number (564823).

2^2097901 is an apocalyptic number.

It is an amenable number.

2097901 is a deficient number, since it is larger than the sum of its proper divisors (161391).

2097901 is a wasteful number, since it uses less digits than its factorization.

2097901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161390.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 2097901 is about 1448.4132697542. The cubic root of 2097901 is about 128.0152366302.

Subtracting from 2097901 its reverse (1097902), we obtain a palindrome (999999).

The spelling of 2097901 in words is "two million, ninety-seven thousand, nine hundred one".