12533897 has 4 divisors (see below), whose sum is σ = 12540996. Its totient is φ = 12526800.

The previous prime is 12533893. The next prime is 12533957. The reversal of 12533897 is 79833521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1048576 + 11485321 = 1024^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 12533897 - 2² = 12533893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12533897.

It is not an unprimeable number, because it can be changed into a prime (12533893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (3135249).

Almost surely, 2^12533897 is an apocalyptic number.

It is an amenable number.

12533897 is a deficient number, since it is larger than the sum of its proper divisors (7099).

12533897 is an equidigital number, since it uses as much as digits as its factorization.

12533897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098.

The product of its digits is 45360, while the sum is 38.

The square root of 12533897 is about 3540.3244201626. The cubic root of 12533897 is about 232.2890335893.

The spelling of 12533897 in words is "twelve million, five hundred thirty-three thousand, eight hundred ninety-seven".