12974545 has 4 divisors (see below), whose sum is σ = 15569460. Its totient is φ = 10379632.

The previous prime is 12974543. The next prime is 12974567. The reversal of 12974545 is 54547921.

12974545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10029889 + 2944656 = 3167^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 12974545 - 2¹ = 12974543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12974543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297450 + ... + 1297459.

It is an arithmetic number, because the mean of its divisors is an integer number (3892365).

Almost surely, 2^12974545 is an apocalyptic number.

It is an amenable number.

12974545 is a deficient number, since it is larger than the sum of its proper divisors (2594915).

12974545 is an equidigital number, since it uses as much as digits as its factorization.

12974545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594914.

The product of its digits is 50400, while the sum is 37.

The square root of 12974545 is about 3602.0195724066. The cubic root of 12974545 is about 234.9798986881.

It can be divided in two parts, 129 and 74545, that multiplied together give a triangular number (9616305 = T₄₃₈₅).

The spelling of 12974545 in words is "twelve million, nine hundred seventy-four thousand, five hundred forty-five".