12026553 has 24 divisors (see below), whose sum is σ = 20147904. Its totient is φ = 6246240.

The previous prime is 12026549. The next prime is 12026569. The reversal of 12026553 is 35562021.

It is not a de Polignac number, because 12026553 - 2² = 12026549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12026513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (839496).

Almost surely, 2^12026553 is an apocalyptic number.

It is an amenable number.

12026553 is a deficient number, since it is larger than the sum of its proper divisors (8121351).

12026553 is a wasteful number, since it uses less digits than its factorization.

12026553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765 (or 4754 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 12026553 is about 3467.9320927608. The cubic root of 12026553 is about 229.1115885413. Note that the first 3 decimals are identical.

Adding to 12026553 its reverse (35562021), we get a palindrome (47588574).

The spelling of 12026553 in words is "twelve million, twenty-six thousand, five hundred fifty-three".