12752881 has 8 divisors (see below), whose sum is σ = 13068104. Its totient is φ = 12441600.

The previous prime is 12752869. The next prime is 12752893. The reversal of 12752881 is 18825721.

It is an interprime number because it is at equal distance from previous prime (12752869) and next prime (12752893).

It can be written as a sum of positive squares in 4 ways, for example, as 467856 + 12285025 = 684^2 + 3505^2 .

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

It is a 5-Lehmer number, since φ(12752881) divides (12752881-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 12752881 - 2⁵ = 12752849 is a prime.

It is a super-2 number, since 2×12752881² = 325271947600322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12752851) 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, 6181 + ... + 7981.

It is an arithmetic number, because the mean of its divisors is an integer number (1633513).

Almost surely, 2^12752881 is an apocalyptic number.

It is an amenable number.

12752881 is a deficient number, since it is larger than the sum of its proper divisors (315223).

12752881 is an equidigital number, since it uses as much as digits as its factorization.

12752881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its digits is 8960, while the sum is 34.

The square root of 12752881 is about 3571.1176121769. The cubic root of 12752881 is about 233.6340311437.

The spelling of 12752881 in words is "twelve million, seven hundred fifty-two thousand, eight hundred eighty-one".