13553172 has 18 divisors (see below), whose sum is σ = 34259498. Its totient is φ = 4517712.

The previous prime is 13553159. The next prime is 13553173. The reversal of 13553172 is 27135531.

13553172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10850436 + 2702736 = 3294^2 + 1644^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×13553172³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188203 + ... + 188274.

Almost surely, 2^13553172 is an apocalyptic number.

13553172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13553172 is an abundant number, since it is smaller than the sum of its proper divisors (20706326).

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

13553172 is a wasteful number, since it uses less digits than its factorization.

13553172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376487 (or 376482 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 13553172 is about 3681.4632960278. The cubic root of 13553172 is about 238.4223604464.

The spelling of 13553172 in words is "thirteen million, five hundred fifty-three thousand, one hundred seventy-two".