12506017 has 4 divisors (see below), whose sum is σ = 12590100. Its totient is φ = 12421936.

The previous prime is 12506003. The next prime is 12506023. The reversal of 12506017 is 71060521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71060521 = 7 ⋅10151503.

It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 6765201 = 2396^2 + 2601^2 .

It is a cyclic number.

It is not a de Polignac number, because 12506017 - 2²³ = 4117409 is a prime.

It is a super-2 number, since 2×12506017² = 312800922408578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12506027) 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, 41818 + ... + 42115.

It is an arithmetic number, because the mean of its divisors is an integer number (3147525).

Almost surely, 2^12506017 is an apocalyptic number.

It is an amenable number.

12506017 is a deficient number, since it is larger than the sum of its proper divisors (84083).

12506017 is an equidigital number, since it uses as much as digits as its factorization.

12506017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84082.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 12506017 is about 3536.3847358567. The cubic root of 12506017 is about 232.1166736273.

Adding to 12506017 its reverse (71060521), we get a palindrome (83566538).

The spelling of 12506017 in words is "twelve million, five hundred six thousand, seventeen".