13540445 has 16 divisors (see below), whose sum is σ = 17850240. Its totient is φ = 9814464.

The previous prime is 13540433. The next prime is 13540463. The reversal of 13540445 is 54404531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13540445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (1115640).

Almost surely, 2^13540445 is an apocalyptic number.

It is an amenable number.

13540445 is a deficient number, since it is larger than the sum of its proper divisors (4309795).

13540445 is a wasteful number, since it uses less digits than its factorization.

13540445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6244.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 13540445 is about 3679.7343654128. The cubic root of 13540445 is about 238.3477075241.

Adding to 13540445 its reverse (54404531), we get a palindrome (67944976).

The spelling of 13540445 in words is "thirteen million, five hundred forty thousand, four hundred forty-five".