12540601 has 2 divisors, whose sum is σ = 12540602. Its totient is φ = 12540600.

The previous prime is 12540599. The next prime is 12540607. The reversal of 12540601 is 10604521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9916201 + 2624400 = 3149^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 12540601 - 2¹ = 12540599 is a prime.

Together with 12540599, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12540607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270300 + 6270301.

It is an arithmetic number, because the mean of its divisors is an integer number (6270301).

Almost surely, 2^12540601 is an apocalyptic number.

It is an amenable number.

12540601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12540601 is an equidigital number, since it uses as much as digits as its factorization.

12540601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12540601 is about 3541.2710994783. The cubic root of 12540601 is about 232.3304409855.

The spelling of 12540601 in words is "twelve million, five hundred forty thousand, six hundred one".