2196481 has 4 divisors (see below), whose sum is σ = 2510272. Its totient is φ = 1882692.

The previous prime is 2196473. The next prime is 2196487. The reversal of 2196481 is 1846912.

It is a happy number.

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 not a de Polignac number, because 2196481 - 2³ = 2196473 is a prime.

It is a super-2 number, since 2×2196481² = 9649057566722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2196487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156885 + ... + 156898.

It is an arithmetic number, because the mean of its divisors is an integer number (627568).

2^2196481 is an apocalyptic number.

It is an amenable number.

2196481 is a deficient number, since it is larger than the sum of its proper divisors (313791).

2196481 is an equidigital number, since it uses as much as digits as its factorization.

2196481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313790.

The product of its digits is 3456, while the sum is 31.

The square root of 2196481 is about 1482.0529680143. The cubic root of 2196481 is about 129.9897625074.

The spelling of 2196481 in words is "two million, one hundred ninety-six thousand, four hundred eighty-one".