26552421 has 32 divisors (see below), whose sum is σ = 46183680. Its totient is φ = 14758848.

The previous prime is 26552413. The next prime is 26552441. The reversal of 26552421 is 12425562.

26552421 is a `hidden beast` number, since 2 + 655 + 2 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 26552421 - 2³ = 26552413 is a prime.

It is a super-2 number, since 2×26552421² = 1410062121922482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26552441) 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 31 ways as a sum of consecutive naturals, for example, 5095 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (1443240).

Almost surely, 2^26552421 is an apocalyptic number.

26552421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26552421 is a deficient number, since it is larger than the sum of its proper divisors (19631259).

26552421 is a wasteful number, since it uses less digits than its factorization.

26552421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850 (or 3844 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 26552421 is about 5152.9041326227. The cubic root of 26552421 is about 298.3330548011. Note that the first 3 decimals are identical.

Adding to 26552421 its reverse (12425562), we get a palindrome (38977983).

The spelling of 26552421 in words is "twenty-six million, five hundred fifty-two thousand, four hundred twenty-one".