12520871 has 8 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 11317240.

The previous prime is 12520853. The next prime is 12520873. The reversal of 12520871 is 17802521.

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

It is not a de Polignac number, because 12520871 - 2¹⁰ = 12519847 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 12520871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (1717200).

Almost surely, 2^12520871 is an apocalyptic number.

12520871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12520871 is a deficient number, since it is larger than the sum of its proper divisors (1216729).

12520871 is a wasteful number, since it uses less digits than its factorization.

12520871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6549.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12520871 is about 3538.4842800273. The cubic root of 12520871 is about 232.2085359926.

The spelling of 12520871 in words is "twelve million, five hundred twenty thousand, eight hundred seventy-one".