13040545 has 24 divisors (see below), whose sum is σ = 18373824. Its totient is φ = 8702496.

The previous prime is 13040543. The next prime is 13040549. The reversal of 13040545 is 54504031.

It is not a de Polignac number, because 13040545 - 2¹ = 13040543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13040543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157074 + ... + 157156.

It is an arithmetic number, because the mean of its divisors is an integer number (765576).

Almost surely, 2^13040545 is an apocalyptic number.

It is an amenable number.

13040545 is a deficient number, since it is larger than the sum of its proper divisors (5333279).

13040545 is an frugal number, since it uses more digits than its factorization.

13040545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13040545 is about 3611.1694781608. The cubic root of 13040545 is about 235.3776634508.

Adding to 13040545 its reverse (54504031), we get a palindrome (67544576).

The spelling of 13040545 in words is "thirteen million, forty thousand, five hundred forty-five".