12553066 has 4 divisors (see below), whose sum is σ = 18829602. Its totient is φ = 6276532.

The previous prime is 12553063. The next prime is 12553067. The reversal of 12553066 is 66035521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66035521 = 4789 ⋅13789.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 99225 = 3529^2 + 315^2 .

It is not an unprimeable number, because it can be changed into a prime (12553063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138265 + ... + 3138268.

Almost surely, 2^12553066 is an apocalyptic number.

12553066 is a deficient number, since it is larger than the sum of its proper divisors (6276536).

12553066 is an equidigital number, since it uses as much as digits as its factorization.

12553066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276535.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 12553066 is about 3543.0306236328. The cubic root of 12553066 is about 232.4073921078.

Adding to 12553066 its reverse (66035521), we get a palindrome (78588587).

The spelling of 12553066 in words is "twelve million, five hundred fifty-three thousand, sixty-six".