12535513 has 2 divisors, whose sum is σ = 12535514. Its totient is φ = 12535512.

The previous prime is 12535493. The next prime is 12535531. The reversal of 12535513 is 31553521.

Together with next prime (12535531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8952064 + 3583449 = 2992^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 12535513 - 2²¹ = 10438361 is a prime.

It is not a weakly prime, because it can be changed into another prime (12535583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267756 + 6267757.

It is an arithmetic number, because the mean of its divisors is an integer number (6267757).

Almost surely, 2^12535513 is an apocalyptic number.

It is an amenable number.

12535513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12535513 is an equidigital number, since it uses as much as digits as its factorization.

12535513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 25.

The square root of 12535513 is about 3540.5526404786. The cubic root of 12535513 is about 232.2990161974.

It can be divided in two parts, 1253551 and 3, that multiplied together give a triangular number (3760653 = T₂₇₄₂).

The spelling of 12535513 in words is "twelve million, five hundred thirty-five thousand, five hundred thirteen".