12534215 has 4 divisors (see below), whose sum is σ = 15041064. Its totient is φ = 10027368.

The previous prime is 12534209. The next prime is 12534217. The reversal of 12534215 is 51243521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51243521 = 7 ⋅7320503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12534215 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 (12534217) 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, 1253417 + ... + 1253426.

It is an arithmetic number, because the mean of its divisors is an integer number (3760266).

Almost surely, 2^12534215 is an apocalyptic number.

12534215 is a deficient number, since it is larger than the sum of its proper divisors (2506849).

12534215 is an equidigital number, since it uses as much as digits as its factorization.

12534215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506848.

The product of its digits is 1200, while the sum is 23.

The square root of 12534215 is about 3540.3693310162. The cubic root of 12534215 is about 232.2909980564.

Adding to 12534215 its reverse (51243521), we get a palindrome (63777736).

The spelling of 12534215 in words is "twelve million, five hundred thirty-four thousand, two hundred fifteen".