5613281 has 8 divisors (see below), whose sum is σ = 6042024. Its totient is φ = 5195520.

The previous prime is 5613259. The next prime is 5613287. The reversal of 5613281 is 1823165.

It can be written as a sum of positive squares in 4 ways, for example, as 43681 + 5569600 = 209^2 + 2360^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5613281 - 2⁶ = 5613217 is a prime.

It is a super-2 number, since 2×5613281² = 63017847169922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5613281.

It is not an unprimeable number, because it can be changed into a prime (5613287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670 + ... + 3743.

It is an arithmetic number, because the mean of its divisors is an integer number (755253).

Almost surely, 2^5613281 is an apocalyptic number.

It is an amenable number.

5613281 is a deficient number, since it is larger than the sum of its proper divisors (428743).

5613281 is a wasteful number, since it uses less digits than its factorization.

5613281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491.

The product of its digits is 1440, while the sum is 26.

The square root of 5613281 is about 2369.2363748685. The cubic root of 5613281 is about 177.7210734808.

The spelling of 5613281 in words is "five million, six hundred thirteen thousand, two hundred eighty-one".