12735553 has 4 divisors (see below), whose sum is σ = 13174740. Its totient is φ = 12296368.

The previous prime is 12735551. The next prime is 12735559. The reversal of 12735553 is 35553721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35553721 = 7 ⋅5079103.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 3873024 = 2977^2 + 1968^2 .

It is a cyclic number.

It is not a de Polignac number, because 12735553 - 2¹ = 12735551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12735551) 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, 219550 + ... + 219607.

It is an arithmetic number, because the mean of its divisors is an integer number (3293685).

Almost surely, 2^12735553 is an apocalyptic number.

It is an amenable number.

12735553 is a deficient number, since it is larger than the sum of its proper divisors (439187).

12735553 is an equidigital number, since it uses as much as digits as its factorization.

12735553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439186.

The product of its digits is 15750, while the sum is 31.

The square root of 12735553 is about 3568.6906562492. The cubic root of 12735553 is about 233.5281662945.

The spelling of 12735553 in words is "twelve million, seven hundred thirty-five thousand, five hundred fifty-three".