12851551 has 2 divisors, whose sum is σ = 12851552. Its totient is φ = 12851550.

The previous prime is 12851537. The next prime is 12851561. The reversal of 12851551 is 15515821.

12851551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12851551 - 2⁹ = 12851039 is a prime.

It is equal to p₈₄₀₂₅₉ and since 12851551 and 840259 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12851561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6425775 + 6425776.

It is an arithmetic number, because the mean of its divisors is an integer number (6425776).

Almost surely, 2^12851551 is an apocalyptic number.

12851551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12851551 is an equidigital number, since it uses as much as digits as its factorization.

12851551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000, while the sum is 28.

The square root of 12851551 is about 3584.9059959781. The cubic root of 12851551 is about 234.2350318295.

The spelling of 12851551 in words is "twelve million, eight hundred fifty-one thousand, five hundred fifty-one".