12654161 has 4 divisors (see below), whose sum is σ = 13627572. Its totient is φ = 11680752.

The previous prime is 12654157. The next prime is 12654221. The reversal of 12654161 is 16145621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16145621 = 179 ⋅90199.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 11015761 = 1280^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 12654161 - 2² = 12654157 is a prime.

It is a super-2 number, since 2×12654161² = 320255581227842, which contains 22 as substring.

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 12654161.

It is not an unprimeable number, because it can be changed into a prime (12654101) 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, 486686 + ... + 486711.

It is an arithmetic number, because the mean of its divisors is an integer number (3406893).

Almost surely, 2^12654161 is an apocalyptic number.

It is an amenable number.

12654161 is a deficient number, since it is larger than the sum of its proper divisors (973411).

12654161 is an equidigital number, since it uses as much as digits as its factorization.

12654161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973410.

The product of its digits is 1440, while the sum is 26.

The square root of 12654161 is about 3557.2687556607. The cubic root of 12654161 is about 233.0296154954.

Adding to 12654161 its reverse (16145621), we get a palindrome (28799782).

It can be divided in two parts, 126 and 54161, that multiplied together give a palindrome (6824286).

The spelling of 12654161 in words is "twelve million, six hundred fifty-four thousand, one hundred sixty-one".