13520455 has 16 divisors (see below), whose sum is σ = 17700480. Its totient is φ = 9854208.

The previous prime is 13520453. The next prime is 13520477. The reversal of 13520455 is 55402531.

It is not a de Polignac number, because 13520455 - 2¹ = 13520453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520453) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3819 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (1106280).

Almost surely, 2^13520455 is an apocalyptic number.

13520455 is a deficient number, since it is larger than the sum of its proper divisors (4180025).

13520455 is a wasteful number, since it uses less digits than its factorization.

13520455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 13520455 is about 3677.0171334929. The cubic root of 13520455 is about 238.2303574353.

Adding to 13520455 its reverse (55402531), we get a palindrome (68922986).

The spelling of 13520455 in words is "thirteen million, five hundred twenty thousand, four hundred fifty-five".