13145455 has 4 divisors (see below), whose sum is σ = 15774552. Its totient is φ = 10516360.

The previous prime is 13145449. The next prime is 13145479. The reversal of 13145455 is 55454131.

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

It is not a de Polignac number, because 13145455 - 2¹¹ = 13143407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314541 + ... + 1314550.

It is an arithmetic number, because the mean of its divisors is an integer number (3943638).

Almost surely, 2^13145455 is an apocalyptic number.

13145455 is a deficient number, since it is larger than the sum of its proper divisors (2629097).

13145455 is an equidigital number, since it uses as much as digits as its factorization.

13145455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629096.

The product of its digits is 6000, while the sum is 28.

The square root of 13145455 is about 3625.6661456896. Note that the first 3 decimals coincide. The cubic root of 13145455 is about 236.0071756412.

Adding to 13145455 its reverse (55454131), we get a palindrome (68599586).

The spelling of 13145455 in words is "thirteen million, one hundred forty-five thousand, four hundred fifty-five".