12534522 has 64 divisors (see below), whose sum is σ = 33675264. Its totient is φ = 3003840.

The previous prime is 12534461. The next prime is 12534523. The reversal of 12534522 is 22543521.

It is a super-2 number, since 2×12534522² = 314228483536968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12534492 and 12534501.

It is not an unprimeable number, because it can be changed into a prime (12534523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4963 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (526176).

Almost surely, 2^12534522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12534522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16837632).

12534522 is an abundant number, since it is smaller than the sum of its proper divisors (21140742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12534522 is a wasteful number, since it uses less digits than its factorization.

12534522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123.

The product of its digits is 2400, while the sum is 24.

The square root of 12534522 is about 3540.4126878091. The cubic root of 12534522 is about 232.2928945388.

It can be divided in two parts, 1253 and 4522, that added together give a palindrome (5775).

The spelling of 12534522 in words is "twelve million, five hundred thirty-four thousand, five hundred twenty-two".