12026551 has 4 divisors (see below), whose sum is σ = 12046600. Its totient is φ = 12006504.

The previous prime is 12026549. The next prime is 12026569. The reversal of 12026551 is 15562021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12026551 - 2¹ = 12026549 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 (12020551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9096 + ... + 10333.

It is an arithmetic number, because the mean of its divisors is an integer number (3011650).

Almost surely, 2^12026551 is an apocalyptic number.

12026551 is a deficient number, since it is larger than the sum of its proper divisors (20049).

12026551 is an equidigital number, since it uses as much as digits as its factorization.

12026551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20048.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12026551 is about 3467.9318044045. The cubic root of 12026551 is about 229.1115758410. Note that the first 3 decimals are identical.

Adding to 12026551 its reverse (15562021), we get a palindrome (27588572).

The spelling of 12026551 in words is "twelve million, twenty-six thousand, five hundred fifty-one".