2197801 has 4 divisors (see below), whose sum is σ = 2230672. Its totient is φ = 2164932.

The previous prime is 2197799. The next prime is 2197847. The reversal of 2197801 is 1087912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2197801 - 2¹ = 2197799 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 2197801.

It is not an unprimeable number, because it can be changed into a prime (2197501) 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, 16335 + ... + 16468.

It is an arithmetic number, because the mean of its divisors is an integer number (557668).

2^2197801 is an apocalyptic number.

It is an amenable number.

2197801 is a deficient number, since it is larger than the sum of its proper divisors (32871).

2197801 is an equidigital number, since it uses as much as digits as its factorization.

2197801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32870.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2197801 is about 1482.4982293413. The cubic root of 2197801 is about 130.0157968969.

The spelling of 2197801 in words is "two million, one hundred ninety-seven thousand, eight hundred one".