12553147 has 4 divisors (see below), whose sum is σ = 13098960. Its totient is φ = 12007336.

The previous prime is 12553141. The next prime is 12553159. The reversal of 12553147 is 74135521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12553147 - 2⁷ = 12553019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12553141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272872 + ... + 272917.

It is an arithmetic number, because the mean of its divisors is an integer number (3274740).

Almost surely, 2^12553147 is an apocalyptic number.

12553147 is a deficient number, since it is larger than the sum of its proper divisors (545813).

12553147 is an equidigital number, since it uses as much as digits as its factorization.

12553147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545812.

The product of its digits is 4200, while the sum is 28.

The square root of 12553147 is about 3543.0420545063. The cubic root of 12553147 is about 232.4078919846.

Adding to 12553147 its reverse (74135521), we get a palindrome (86688668).

The spelling of 12553147 in words is "twelve million, five hundred fifty-three thousand, one hundred forty-seven".