12545101 has 4 divisors (see below), whose sum is σ = 12555612. Its totient is φ = 12534592.

The previous prime is 12545089. The next prime is 12545129. The reversal of 12545101 is 10154521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10154521 = 13 ⋅781117.

It can be written as a sum of positive squares in 2 ways, for example, as 6245001 + 6300100 = 2499^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545101 - 2¹¹ = 12543053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545171) 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, 3196 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (3138903).

Almost surely, 2^12545101 is an apocalyptic number.

It is an amenable number.

12545101 is a deficient number, since it is larger than the sum of its proper divisors (10511).

12545101 is an equidigital number, since it uses as much as digits as its factorization.

12545101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 12545101 is about 3541.9064075721. The cubic root of 12545101 is about 232.3582270530.

Adding to 12545101 its reverse (10154521), we get a palindrome (22699622).

The spelling of 12545101 in words is "twelve million, five hundred forty-five thousand, one hundred one".