15535423 has 4 divisors (see below), whose sum is σ = 15695680. Its totient is φ = 15375168.

The previous prime is 15535417. The next prime is 15535441. The reversal of 15535423 is 32453551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15535423 - 2⁵ = 15535391 is a prime.

It is the 3942-nd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15535391 and 15535400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15535453) by changing a digit.

It is a nontrivial repunit in base 3941.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79983 + ... + 80176.

It is an arithmetic number, because the mean of its divisors is an integer number (3923920).

Almost surely, 2^15535423 is an apocalyptic number.

15535423 is a deficient number, since it is larger than the sum of its proper divisors (160257).

15535423 is an equidigital number, since it uses as much as digits as its factorization.

15535423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160256.

The product of its digits is 9000, while the sum is 28.

The square root of 15535423 is about 3941.5000951414. The cubic root of 15535423 is about 249.5213401238.

Adding to 15535423 its reverse (32453551), we get a palindrome (47988974).

The spelling of 15535423 in words is "fifteen million, five hundred thirty-five thousand, four hundred twenty-three".