12775553 has 4 divisors (see below), whose sum is σ = 14600640. Its totient is φ = 10950468.

The previous prime is 12775549. The next prime is 12775577. The reversal of 12775553 is 35557721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35557721 = 19 ⋅1871459.

It is a cyclic number.

It is not a de Polignac number, because 12775553 - 2² = 12775549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12775583) 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, 912533 + ... + 912546.

It is an arithmetic number, because the mean of its divisors is an integer number (3650160).

Almost surely, 2^12775553 is an apocalyptic number.

It is an amenable number.

12775553 is a deficient number, since it is larger than the sum of its proper divisors (1825087).

12775553 is an equidigital number, since it uses as much as digits as its factorization.

12775553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825086.

The product of its digits is 36750, while the sum is 35.

The square root of 12775553 is about 3574.2905589781. The cubic root of 12775553 is about 233.7724002669.

The spelling of 12775553 in words is "twelve million, seven hundred seventy-five thousand, five hundred fifty-three".