13551280 has 40 divisors (see below), whose sum is σ = 31685472. Its totient is φ = 5389824.

The previous prime is 13551233. The next prime is 13551319. The reversal of 13551280 is 8215531.

It is a happy number.

13551280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18277 + ... + 19003.

Almost surely, 2^13551280 is an apocalyptic number.

13551280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13551280 is an abundant number, since it is smaller than the sum of its proper divisors (18134192).

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

13551280 is a wasteful number, since it uses less digits than its factorization.

13551280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 13551280 is about 3681.2063240193. The cubic root of 13551280 is about 238.4112654767.

It can be divided in two parts, 13551 and 280, that added together give a palindrome (13831).

The spelling of 13551280 in words is "thirteen million, five hundred fifty-one thousand, two hundred eighty".