13557056 has 28 divisors (see below), whose sum is σ = 27480768. Its totient is φ = 6632832.

The previous prime is 13557023. The next prime is 13557073. The reversal of 13557056 is 65075531.

13557056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (981456).

Almost surely, 2^13557056 is an apocalyptic number.

13557056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13740384).

13557056 is an abundant number, since it is smaller than the sum of its proper divisors (13923712).

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

13557056 is an equidigital number, since it uses as much as digits as its factorization.

13557056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566 (or 4556 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 13557056 is about 3681.9907658765. The cubic root of 13557056 is about 238.4451335656.

The spelling of 13557056 in words is "thirteen million, five hundred fifty-seven thousand, fifty-six".