12461851 has 4 divisors (see below), whose sum is σ = 12891600. Its totient is φ = 12032104.

The previous prime is 12461831. The next prime is 12461887. The reversal of 12461851 is 15816421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15816421 = 337 ⋅46933.

It is a cyclic number.

It is not a de Polignac number, because 12461851 - 2⁷ = 12461723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12461831) 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, 214831 + ... + 214888.

It is an arithmetic number, because the mean of its divisors is an integer number (3222900).

Almost surely, 2^12461851 is an apocalyptic number.

12461851 is a deficient number, since it is larger than the sum of its proper divisors (429749).

12461851 is an equidigital number, since it uses as much as digits as its factorization.

12461851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429748.

The product of its digits is 1920, while the sum is 28.

The square root of 12461851 is about 3530.1346999796. The cubic root of 12461851 is about 231.8431051274.

The spelling of 12461851 in words is "twelve million, four hundred sixty-one thousand, eight hundred fifty-one".