12956547 has 4 divisors (see below), whose sum is σ = 17275400. Its totient is φ = 8637696.

The previous prime is 12956509. The next prime is 12956563. The reversal of 12956547 is 74565921.

12956547 is digitally balanced in base 2, 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 not a de Polignac number, because 12956547 - 2¹⁴ = 12940163 is a prime.

It is a super-2 number, since 2×12956547² = 335744220326418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12956597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159422 + ... + 2159427.

It is an arithmetic number, because the mean of its divisors is an integer number (4318850).

Almost surely, 2^12956547 is an apocalyptic number.

12956547 is a deficient number, since it is larger than the sum of its proper divisors (4318853).

12956547 is an equidigital number, since it uses as much as digits as its factorization.

12956547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318852.

The product of its digits is 75600, while the sum is 39.

The square root of 12956547 is about 3599.5203847179. The cubic root of 12956547 is about 234.8711954474.

The spelling of 12956547 in words is "twelve million, nine hundred fifty-six thousand, five hundred forty-seven".