12345522 has 16 divisors (see below), whose sum is σ = 28218432. Its totient is φ = 3527280.

The previous prime is 12345521. The next prime is 12345523. The reversal of 12345522 is 22554321.

It is an interprime number because it is at equal distance from previous prime (12345521) and next prime (12345523).

It is a junction number, because it is equal to n+sod(n) for n = 12345492 and 12345501.

It is not an unprimeable number, because it can be changed into a prime (12345521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146929 + ... + 147012.

It is an arithmetic number, because the mean of its divisors is an integer number (1763652).

Almost surely, 2^12345522 is an apocalyptic number.

12345522 is an abundant number, since it is smaller than the sum of its proper divisors (15872910).

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

12345522 is a wasteful number, since it uses less digits than its factorization.

12345522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293953.

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

The square root of 12345522 is about 3513.6195013120. The cubic root of 12345522 is about 231.1194449829.

Adding to 12345522 its reverse (22554321), we get a palindrome (34899843).

The spelling of 12345522 in words is "twelve million, three hundred forty-five thousand, five hundred twenty-two".