12521076 has 24 divisors (see below), whose sum is σ = 30754080. Its totient is φ = 3953952.

The previous prime is 12521053. The next prime is 12521081. The reversal of 12521076 is 67012521.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27231 + ... + 27686.

It is an arithmetic number, because the mean of its divisors is an integer number (1281420).

Almost surely, 2^12521076 is an apocalyptic number.

It is an amenable number.

12521076 is an abundant number, since it is smaller than the sum of its proper divisors (18233004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521076 is a wasteful number, since it uses less digits than its factorization.

12521076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54943 (or 54941 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 12521076 is about 3538.5132471138. The cubic root of 12521076 is about 232.2098032764.

Adding to 12521076 its reverse (67012521), we get a palindrome (79533597).

The spelling of 12521076 in words is "twelve million, five hundred twenty-one thousand, seventy-six".