26253421 has 4 divisors (see below), whose sum is σ = 27635200. Its totient is φ = 24871644.

The previous prime is 26253397. The next prime is 26253427. The reversal of 26253421 is 12435262.

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 not a de Polignac number, because 26253421 - 2¹¹ = 26251373 is a prime.

It is a super-5 number, since 5×26253421⁵ (a number of 38 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26253427) 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 3 ways as a sum of consecutive naturals, for example, 690861 + ... + 690898.

It is an arithmetic number, because the mean of its divisors is an integer number (6908800).

Almost surely, 2^26253421 is an apocalyptic number.

It is an amenable number.

26253421 is a deficient number, since it is larger than the sum of its proper divisors (1381779).

26253421 is a wasteful number, since it uses less digits than its factorization.

26253421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381778.

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

The square root of 26253421 is about 5123.8092275181. The cubic root of 26253421 is about 297.2090076532.

Adding to 26253421 its reverse (12435262), we get a palindrome (38688683).

The spelling of 26253421 in words is "twenty-six million, two hundred fifty-three thousand, four hundred twenty-one".