12851851 has 2 divisors, whose sum is σ = 12851852. Its totient is φ = 12851850.

The previous prime is 12851849. The next prime is 12851897. The reversal of 12851851 is 15815821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12851851 - 2¹ = 12851849 is a prime.

Together with 12851849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12851831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6425925 + 6425926.

It is an arithmetic number, because the mean of its divisors is an integer number (6425926).

Almost surely, 2^12851851 is an apocalyptic number.

12851851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12851851 is an equidigital number, since it uses as much as digits as its factorization.

12851851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 31.

The square root of 12851851 is about 3584.9478378353. The cubic root of 12851851 is about 234.2368544360.

It can be divided in two parts, 1285 and 1851, that added together give a square (3136 = 56²).

The spelling of 12851851 in words is "twelve million, eight hundred fifty-one thousand, eight hundred fifty-one".