13020553 has 16 divisors (see below), whose sum is σ = 16724736. Its totient is φ = 9852480.

The previous prime is 13020541. The next prime is 13020577. The reversal of 13020553 is 35502031.

13020553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13020553.

It is not an unprimeable number, because it can be changed into a prime (13020503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (1045296).

Almost surely, 2^13020553 is an apocalyptic number.

13020553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13020553 is a deficient number, since it is larger than the sum of its proper divisors (3704183).

13020553 is a wasteful number, since it uses less digits than its factorization.

13020553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 13020553 is about 3608.4003381000. The cubic root of 13020553 is about 235.2573188640.

Adding to 13020553 its reverse (35502031), we get a palindrome (48522584).

The spelling of 13020553 in words is "thirteen million, twenty thousand, five hundred fifty-three".