12992251 has 2 divisors, whose sum is σ = 12992252. Its totient is φ = 12992250.

The previous prime is 12992209. The next prime is 12992269. The reversal of 12992251 is 15229921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12992251 - 2⁷ = 12992123 is a prime.

It is not a weakly prime, because it can be changed into another prime (12992201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496125 + 6496126.

It is an arithmetic number, because the mean of its divisors is an integer number (6496126).

Almost surely, 2^12992251 is an apocalyptic number.

12992251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12992251 is an equidigital number, since it uses as much as digits as its factorization.

12992251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 31.

The square root of 12992251 is about 3604.4765223261. The cubic root of 12992251 is about 235.0867402747.

Subtracting 12992251 from its reverse (15229921), we obtain a triangular number (2237670 = T₂₁₁₅).

The spelling of 12992251 in words is "twelve million, nine hundred ninety-two thousand, two hundred fifty-one".