26221453 has 6 divisors (see below), whose sum is σ = 26390186. Its totient is φ = 26053632.

The previous prime is 26221411. The next prime is 26221471. The reversal of 26221453 is 35412262.

It can be written as a sum of positive squares in 3 ways, for example, as 21650409 + 4571044 = 4653^2 + 2138^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26221453 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 (26201453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65851 + ... + 66247.

Almost surely, 2^26221453 is an apocalyptic number.

It is an amenable number.

26221453 is a deficient number, since it is larger than the sum of its proper divisors (168733).

26221453 is an frugal number, since it uses more digits than its factorization.

26221453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 654 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 26221453 is about 5120.6887232090. The cubic root of 26221453 is about 297.0883245036.

The spelling of 26221453 in words is "twenty-six million, two hundred twenty-one thousand, four hundred fifty-three".