13020755 has 16 divisors (see below), whose sum is σ = 17329248. Its totient is φ = 9312000.

The previous prime is 13020751. The next prime is 13020767. The reversal of 13020755 is 55702031.

It is not a de Polignac number, because 13020755 - 2² = 13020751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13020755.

It is not an unprimeable number, because it can be changed into a prime (13020751) 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, 1415 + ... + 5295.

It is an arithmetic number, because the mean of its divisors is an integer number (1083078).

Almost surely, 2^13020755 is an apocalyptic number.

13020755 is a deficient number, since it is larger than the sum of its proper divisors (4308493).

13020755 is a wasteful number, since it uses less digits than its factorization.

13020755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 13020755 is about 3608.4283282338. The cubic root of 13020755 is about 235.2585354466.

Adding to 13020755 its reverse (55702031), we get a palindrome (68722786).

The spelling of 13020755 in words is "thirteen million, twenty thousand, seven hundred fifty-five".