2195641 has 6 divisors (see below), whose sum is σ = 2554170. Its totient is φ = 1881936.

The previous prime is 2195629. The next prime is 2195653. The reversal of 2195641 is 1465912.

It is an interprime number because it is at equal distance from previous prime (2195629) and next prime (2195653).

It can be written as a sum of positive squares in only one way, i.e., 2019241 + 176400 = 1421^2 + 420^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2195641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2195671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22356 + ... + 22453.

It is an arithmetic number, because the mean of its divisors is an integer number (425695).

2^2195641 is an apocalyptic number.

2195641 is the 856-th hex number.

It is an amenable number.

2195641 is a deficient number, since it is larger than the sum of its proper divisors (358529).

2195641 is an equidigital number, since it uses as much as digits as its factorization.

2195641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44823 (or 44816 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 2195641 is about 1481.7695502338. The cubic root of 2195641 is about 129.9731897375.

The spelling of 2195641 in words is "two million, one hundred ninety-five thousand, six hundred forty-one".