13020551 has 8 divisors (see below), whose sum is σ = 13348800. Its totient is φ = 12694528.

The previous prime is 13020541. The next prime is 13020577. The reversal of 13020551 is 15502031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13020551 - 2¹⁰ = 13019527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020541) 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 7 ways as a sum of consecutive naturals, for example, 20795 + ... + 21411.

It is an arithmetic number, because the mean of its divisors is an integer number (1668600).

Almost surely, 2^13020551 is an apocalyptic number.

13020551 is a deficient number, since it is larger than the sum of its proper divisors (328249).

13020551 is an equidigital number, since it uses as much as digits as its factorization.

13020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13020551 is about 3608.4000609688. The cubic root of 13020551 is about 235.2573068186.

Adding to 13020551 its reverse (15502031), we get a palindrome (28522582).

The spelling of 13020551 in words is "thirteen million, twenty thousand, five hundred fifty-one".