12754561 has 4 divisors (see below), whose sum is σ = 12970800. Its totient is φ = 12538324.

The previous prime is 12754559. The next prime is 12754579. The reversal of 12754561 is 16545721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16545721 = 421 ⋅39301.

It is a cyclic number.

It is not a de Polignac number, because 12754561 - 2¹ = 12754559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12754541) 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, 108031 + ... + 108148.

It is an arithmetic number, because the mean of its divisors is an integer number (3242700).

Almost surely, 2^12754561 is an apocalyptic number.

It is an amenable number.

12754561 is a deficient number, since it is larger than the sum of its proper divisors (216239).

12754561 is an equidigital number, since it uses as much as digits as its factorization.

12754561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216238.

The product of its digits is 8400, while the sum is 31.

The square root of 12754561 is about 3571.3528249110. The cubic root of 12754561 is about 233.6442899481.

The spelling of 12754561 in words is "twelve million, seven hundred fifty-four thousand, five hundred sixty-one".