12531845 has 8 divisors (see below), whose sum is σ = 15358464. Its totient is φ = 9811984.

The previous prime is 12531833. The next prime is 12531851. The reversal of 12531845 is 54813521.

12531845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12531845 - 2⁴ = 12531829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 26429 + ... + 26898.

It is an arithmetic number, because the mean of its divisors is an integer number (1919808).

Almost surely, 2^12531845 is an apocalyptic number.

It is an amenable number.

12531845 is a deficient number, since it is larger than the sum of its proper divisors (2826619).

12531845 is an equidigital number, since it uses as much as digits as its factorization.

12531845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53379.

The product of its digits is 4800, while the sum is 29.

The square root of 12531845 is about 3540.0346043506. The cubic root of 12531845 is about 232.2763564171.

The spelling of 12531845 in words is "twelve million, five hundred thirty-one thousand, eight hundred forty-five".