12545851 has 4 divisors (see below), whose sum is σ = 12812832. Its totient is φ = 12278872.

The previous prime is 12545843. The next prime is 12545861. The reversal of 12545851 is 15854521.

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

It is a cyclic number.

It is not a de Polignac number, because 12545851 - 2³ = 12545843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12545801) 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, 133420 + ... + 133513.

It is an arithmetic number, because the mean of its divisors is an integer number (3203208).

Almost surely, 2^12545851 is an apocalyptic number.

12545851 is a deficient number, since it is larger than the sum of its proper divisors (266981).

12545851 is an equidigital number, since it uses as much as digits as its factorization.

12545851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266980.

The product of its digits is 8000, while the sum is 31.

The square root of 12545851 is about 3542.0122811758. The cubic root of 12545851 is about 232.3628574182.

It can be divided in two parts, 125 and 45851, that multiplied together give a palindrome (5731375).

The spelling of 12545851 in words is "twelve million, five hundred forty-five thousand, eight hundred fifty-one".