12045523 has 12 divisors (see below), whose sum is σ = 14076720. Its totient is φ = 10277232.

The previous prime is 12045521. The next prime is 12045589. The reversal of 12045523 is 32554021.

It is not a de Polignac number, because 12045523 - 2¹ = 12045521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12045494 and 12045503.

It is not an unprimeable number, because it can be changed into a prime (12045521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13938 + ... + 14776.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^12045523 is an apocalyptic number.

12045523 is a deficient number, since it is larger than the sum of its proper divisors (2031197).

12045523 is an equidigital number, since it uses as much as digits as its factorization.

12045523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 12045523 is about 3470.6660744013. Note that the first 3 decimals coincide. The cubic root of 12045523 is about 229.2319877851.

Adding to 12045523 its reverse (32554021), we get a palindrome (44599544).

The spelling of 12045523 in words is "twelve million, forty-five thousand, five hundred twenty-three".