13531056 has 120 divisors (see below), whose sum is σ = 44443584. Its totient is φ = 3507840.

The previous prime is 13531043. The next prime is 13531057. The reversal of 13531056 is 65013531.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25611 + ... + 26133.

Almost surely, 2^13531056 is an apocalyptic number.

13531056 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 13531056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22221792).

13531056 is an abundant number, since it is smaller than the sum of its proper divisors (30912528).

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

13531056 is a wasteful number, since it uses less digits than its factorization.

13531056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 13531056 is about 3678.4583727426. The cubic root of 13531056 is about 238.2926043605.

Adding to 13531056 its reverse (65013531), we get a palindrome (78544587).

The spelling of 13531056 in words is "thirteen million, five hundred thirty-one thousand, fifty-six".