12450217 has 4 divisors (see below), whose sum is σ = 13407940. Its totient is φ = 11492496.

The previous prime is 12450211. The next prime is 12450247. The reversal of 12450217 is 71205421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71205421 = 7 ⋅10172203.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 4247721 = 2864^2 + 2061^2 .

It is a cyclic number.

It is not a de Polignac number, because 12450217 - 2²³ = 4061609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12450211) 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, 478842 + ... + 478867.

It is an arithmetic number, because the mean of its divisors is an integer number (3351985).

Almost surely, 2^12450217 is an apocalyptic number.

It is an amenable number.

12450217 is a deficient number, since it is larger than the sum of its proper divisors (957723).

12450217 is an equidigital number, since it uses as much as digits as its factorization.

12450217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957722.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12450217 is about 3528.4865027374. The cubic root of 12450217 is about 231.7709354719.

Adding to 12450217 its reverse (71205421), we get a palindrome (83655638).

It can be divided in two parts, 12450 and 217, that multiplied together give a triangular number (2701650 = T₂₃₂₄).

The spelling of 12450217 in words is "twelve million, four hundred fifty thousand, two hundred seventeen".