12540513 has 8 divisors (see below), whose sum is σ = 17600800. Its totient is φ = 7920288.

The previous prime is 12540503. The next prime is 12540529. The reversal of 12540513 is 31504521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12540513 - 2⁶ = 12540449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12540513.

It is not an unprimeable number, because it can be changed into a prime (12540503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109948 + ... + 110061.

It is an arithmetic number, because the mean of its divisors is an integer number (2200100).

Almost surely, 2^12540513 is an apocalyptic number.

It is an amenable number.

12540513 is a deficient number, since it is larger than the sum of its proper divisors (5060287).

12540513 is a wasteful number, since it uses less digits than its factorization.

12540513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220031.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12540513 is about 3541.2586745393. The cubic root of 12540513 is about 232.3298975473.

The spelling of 12540513 in words is "twelve million, five hundred forty thousand, five hundred thirteen".