12118553 has 2 divisors, whose sum is σ = 12118554. Its totient is φ = 12118552.

The previous prime is 12118543. The next prime is 12118567. The reversal of 12118553 is 35581121.

It is a happy number.

12118553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10067929 + 2050624 = 3173^2 + 1432^2 .

It is an emirp because it is prime and its reverse (35581121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12118553 - 2⁴ = 12118537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12118543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059276 + 6059277.

It is an arithmetic number, because the mean of its divisors is an integer number (6059277).

Almost surely, 2^12118553 is an apocalyptic number.

It is an amenable number.

12118553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12118553 is an equidigital number, since it uses as much as digits as its factorization.

12118553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 26.

The square root of 12118553 is about 3481.1712109576. The cubic root of 12118553 is about 229.6943198154.

Adding to 12118553 its reverse (35581121), we get a palindrome (47699674).

The spelling of 12118553 in words is "twelve million, one hundred eighteen thousand, five hundred fifty-three".