12861535 has 4 divisors (see below), whose sum is σ = 15433848. Its totient is φ = 10289224.

The previous prime is 12861517. The next prime is 12861553. The reversal of 12861535 is 53516821.

12861535 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12861517) and next prime (12861553).

It is a cyclic number.

It is not a de Polignac number, because 12861535 - 2¹¹ = 12859487 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12861497 and 12861506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286149 + ... + 1286158.

It is an arithmetic number, because the mean of its divisors is an integer number (3858462).

Almost surely, 2^12861535 is an apocalyptic number.

12861535 is a deficient number, since it is larger than the sum of its proper divisors (2572313).

12861535 is an equidigital number, since it uses as much as digits as its factorization.

12861535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572312.

The product of its digits is 7200, while the sum is 31.

The square root of 12861535 is about 3586.2982307666. The cubic root of 12861535 is about 234.2956729464.

The spelling of 12861535 in words is "twelve million, eight hundred sixty-one thousand, five hundred thirty-five".