2196541 has 2 divisors, whose sum is σ = 2196542. Its totient is φ = 2196540.

The previous prime is 2196539. The next prime is 2196559. The reversal of 2196541 is 1456912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2090916 + 105625 = 1446^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2196541 - 2¹ = 2196539 is a prime.

Together with 2196539, it forms a pair of twin primes.

It is a Chen prime.

2196541 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2196041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098270 + 1098271.

It is an arithmetic number, because the mean of its divisors is an integer number (1098271).

2^2196541 is an apocalyptic number.

It is an amenable number.

2196541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196541 is an equidigital number, since it uses as much as digits as its factorization.

2196541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2196541 is about 1482.0732100676. The cubic root of 2196541 is about 129.9909461150.

The spelling of 2196541 in words is "two million, one hundred ninety-six thousand, five hundred forty-one".