12507361 has 4 divisors (see below), whose sum is σ = 12514500. Its totient is φ = 12500224.

The previous prime is 12507347. The next prime is 12507371. The reversal of 12507361 is 16370521.

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: 16370521 = 41 ⋅399281.

It can be written as a sum of positive squares in 2 ways, for example, as 7667361 + 4840000 = 2769^2 + 2200^2 .

It is a cyclic number.

It is not a de Polignac number, because 12507361 - 2⁵ = 12507329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507371) 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, 1065 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (3128625).

Almost surely, 2^12507361 is an apocalyptic number.

It is an amenable number.

12507361 is a deficient number, since it is larger than the sum of its proper divisors (7139).

12507361 is an equidigital number, since it uses as much as digits as its factorization.

12507361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12507361 is about 3536.5747553247. The cubic root of 12507361 is about 232.1249883885.

Adding to 12507361 its reverse (16370521), we get a palindrome (28877882).

The spelling of 12507361 in words is "twelve million, five hundred seven thousand, three hundred sixty-one".