12013553 has 2 divisors, whose sum is σ = 12013554. Its totient is φ = 12013552.

The previous prime is 12013549. The next prime is 12013571. The reversal of 12013553 is 35531021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8958049 + 3055504 = 2993^2 + 1748^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013553 - 2² = 12013549 is a prime.

It is a super-3 number, since 3×12013553³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12013583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006776 + 6006777.

It is an arithmetic number, because the mean of its divisors is an integer number (6006777).

Almost surely, 2^12013553 is an apocalyptic number.

It is an amenable number.

12013553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013553 is an equidigital number, since it uses as much as digits as its factorization.

12013553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12013553 is about 3466.0572701558. The cubic root of 12013553 is about 229.0290067056.

Adding to 12013553 its reverse (35531021), we get a palindrome (47544574).

The spelling of 12013553 in words is "twelve million, thirteen thousand, five hundred fifty-three".