12162523 has 4 divisors (see below), whose sum is σ = 12206088. Its totient is φ = 12118960.

The previous prime is 12162517. The next prime is 12162541. The reversal of 12162523 is 32526121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32526121 = 131 ⋅248291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12162523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12162494 and 12162503.

It is not an unprimeable number, because it can be changed into a prime (12162503) 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, 21361 + ... + 21922.

It is an arithmetic number, because the mean of its divisors is an integer number (3051522).

Almost surely, 2^12162523 is an apocalyptic number.

12162523 is a deficient number, since it is larger than the sum of its proper divisors (43565).

12162523 is an equidigital number, since it uses as much as digits as its factorization.

12162523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43564.

The product of its digits is 720, while the sum is 22.

The square root of 12162523 is about 3487.4808960050. The cubic root of 12162523 is about 229.9717860792.

Adding to 12162523 its reverse (32526121), we get a palindrome (44688644).

The spelling of 12162523 in words is "twelve million, one hundred sixty-two thousand, five hundred twenty-three".