15480123 has 4 divisors (see below), whose sum is σ = 20640168. Its totient is φ = 10320080.

The previous prime is 15480121. The next prime is 15480137. The reversal of 15480123 is 32108451.

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 15480123 - 2¹ = 15480121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15480093 and 15480102.

It is not an unprimeable number, because it can be changed into a prime (15480121) 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, 2580018 + ... + 2580023.

It is an arithmetic number, because the mean of its divisors is an integer number (5160042).

Almost surely, 2^15480123 is an apocalyptic number.

15480123 is a deficient number, since it is larger than the sum of its proper divisors (5160045).

15480123 is an equidigital number, since it uses as much as digits as its factorization.

15480123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160044.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 15480123 is about 3934.4787456536. The cubic root of 15480123 is about 249.2249221674.

Adding to 15480123 its reverse (32108451), we get a palindrome (47588574).

The spelling of 15480123 in words is "fifteen million, four hundred eighty thousand, one hundred twenty-three".