2195997 has 4 divisors (see below), whose sum is σ = 2928000. Its totient is φ = 1463996.

The previous prime is 2195989. The next prime is 2196011. The reversal of 2195997 is 7995912.

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 2195997 - 2³ = 2195989 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195917) 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, 365997 + ... + 366002.

It is an arithmetic number, because the mean of its divisors is an integer number (732000).

2^2195997 is an apocalyptic number.

It is an amenable number.

2195997 is a deficient number, since it is larger than the sum of its proper divisors (732003).

2195997 is an equidigital number, since it uses as much as digits as its factorization.

2195997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732002.

The product of its digits is 51030, while the sum is 42.

The square root of 2195997 is about 1481.8896720067. The cubic root of 2195997 is about 129.9802139512.

It can be divided in two parts, 219 and 5997, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 2195997 in words is "two million, one hundred ninety-five thousand, nine hundred ninety-seven".