12514781 has 2 divisors, whose sum is σ = 12514782. Its totient is φ = 12514780.

The previous prime is 12514751. The next prime is 12514807. The reversal of 12514781 is 18741521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 5040025 = 2734^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 12514781 - 2¹⁸ = 12252637 is a prime.

It is a super-2 number, since 2×12514781² = 313239486955922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12514721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257390 + 6257391.

It is an arithmetic number, because the mean of its divisors is an integer number (6257391).

Almost surely, 2^12514781 is an apocalyptic number.

It is an amenable number.

12514781 is a deficient number, since it is larger than the sum of its proper divisors (1).

12514781 is an equidigital number, since it uses as much as digits as its factorization.

12514781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 12514781 is about 3537.6236374154. The cubic root of 12514781 is about 232.1708820807.

The spelling of 12514781 in words is "twelve million, five hundred fourteen thousand, seven hundred eighty-one".