13123545 has 24 divisors (see below), whose sum is σ = 21421056. Its totient is φ = 6860448.

The previous prime is 13123531. The next prime is 13123577. The reversal of 13123545 is 54532131.

It is not a de Polignac number, because 13123545 - 2⁴ = 13123529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103272 + ... + 103398.

It is an arithmetic number, because the mean of its divisors is an integer number (892544).

Almost surely, 2^13123545 is an apocalyptic number.

13123545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13123545 is a deficient number, since it is larger than the sum of its proper divisors (8297511).

13123545 is an equidigital number, since it uses as much as digits as its factorization.

13123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 218 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 13123545 is about 3622.6433719040. The cubic root of 13123545 is about 235.8759821925.

Adding to 13123545 its reverse (54532131), we get a palindrome (67655676).

The spelling of 13123545 in words is "thirteen million, one hundred twenty-three thousand, five hundred forty-five".