12712545 has 24 divisors (see below), whose sum is σ = 22853376. Its totient is φ = 6779376.

The previous prime is 12712543. The next prime is 12712547. The reversal of 12712545 is 54521721.

12712545 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12712543) and next prime (12712547).

It is not a de Polignac number, because 12712545 - 2¹ = 12712543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12712543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4017 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (952224).

Almost surely, 2^12712545 is an apocalyptic number.

12712545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12712545 is a deficient number, since it is larger than the sum of its proper divisors (10140831).

12712545 is an equidigital number, since it uses as much as digits as its factorization.

12712545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10483 (or 10471 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 12712545 is about 3565.4656077433. The cubic root of 12712545 is about 233.3874511661.

The spelling of 12712545 in words is "twelve million, seven hundred twelve thousand, five hundred forty-five".