15115423 has 4 divisors (see below), whose sum is σ = 15126408. Its totient is φ = 15104440.

The previous prime is 15115417. The next prime is 15115427. The reversal of 15115423 is 32451151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15115423 - 2⁵ = 15115391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15115394 and 15115403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15115427) 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, 3073 + ... + 6298.

It is an arithmetic number, because the mean of its divisors is an integer number (3781602).

Almost surely, 2^15115423 is an apocalyptic number.

15115423 is a deficient number, since it is larger than the sum of its proper divisors (10985).

15115423 is an equidigital number, since it uses as much as digits as its factorization.

15115423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984.

The product of its digits is 600, while the sum is 22.

The square root of 15115423 is about 3887.8558358046. The cubic root of 15115423 is about 247.2521642498.

Adding to 15115423 its reverse (32451151), we get a palindrome (47566574).

The spelling of 15115423 in words is "fifteen million, one hundred fifteen thousand, four hundred twenty-three".