12521897 has 8 divisors (see below), whose sum is σ = 12832512. Its totient is φ = 12214800.

The previous prime is 12521891. The next prime is 12521903. The reversal of 12521897 is 79812521.

It is an interprime number because it is at equal distance from previous prime (12521891) and next prime (12521903).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12521897 - 2¹⁰ = 12520873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12521891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7208 + ... + 8774.

It is an arithmetic number, because the mean of its divisors is an integer number (1604064).

Almost surely, 2^12521897 is an apocalyptic number.

It is an amenable number.

12521897 is a deficient number, since it is larger than the sum of its proper divisors (310615).

12521897 is a wasteful number, since it uses less digits than its factorization.

12521897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its digits is 10080, while the sum is 35.

The square root of 12521897 is about 3538.6292543865. The cubic root of 12521897 is about 232.2148784547.

It can be divided in two parts, 125 and 21897, that added together give a palindrome (22022).

The spelling of 12521897 in words is "twelve million, five hundred twenty-one thousand, eight hundred ninety-seven".