13553420 has 24 divisors (see below), whose sum is σ = 30137184. Its totient is φ = 5102336.

The previous prime is 13553413. The next prime is 13553429. The reversal of 13553420 is 2435531.

It is not an unprimeable number, because it can be changed into a prime (13553429) 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, 19592 + ... + 20271.

It is an arithmetic number, because the mean of its divisors is an integer number (1255716).

Almost surely, 2^13553420 is an apocalyptic number.

13553420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13553420 is an abundant number, since it is smaller than the sum of its proper divisors (16583764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13553420 is a wasteful number, since it uses less digits than its factorization.

13553420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39889 (or 39887 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13553420 is about 3681.4969781327. The cubic root of 13553420 is about 238.4238146788.

Adding to 13553420 its reverse (2435531), we get a palindrome (15988951).

The spelling of 13553420 in words is "thirteen million, five hundred fifty-three thousand, four hundred twenty".