26196221 has 4 divisors (see below), whose sum is σ = 26220672. Its totient is φ = 26171772.

The previous prime is 26196199. The next prime is 26196227. The reversal of 26196221 is 12269162.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26196221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26196227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10541 + ... + 12786.

It is an arithmetic number, because the mean of its divisors is an integer number (6555168).

Almost surely, 2^26196221 is an apocalyptic number.

It is an amenable number.

26196221 is a deficient number, since it is larger than the sum of its proper divisors (24451).

26196221 is a wasteful number, since it uses less digits than its factorization.

26196221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24450.

The product of its digits is 2592, while the sum is 29.

The square root of 26196221 is about 5118.2243991447. The cubic root of 26196221 is about 296.9930013051.

The spelling of 26196221 in words is "twenty-six million, one hundred ninety-six thousand, two hundred twenty-one".