5561281 has 24 divisors (see below), whose sum is σ = 6703200. Its totient is φ = 4593600.

The previous prime is 5561263. The next prime is 5561299. The reversal of 5561281 is 1821655.

It is an interprime number because it is at equal distance from previous prime (5561263) and next prime (5561299).

It is not a de Polignac number, because 5561281 - 2⁹ = 5560769 is a prime.

It is a super-3 number, since 3×5561281³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (5561221) 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, 94230 + ... + 94288.

It is an arithmetic number, because the mean of its divisors is an integer number (279300).

Almost surely, 2^5561281 is an apocalyptic number.

It is an amenable number.

5561281 is a deficient number, since it is larger than the sum of its proper divisors (1141919).

5561281 is a wasteful number, since it uses less digits than its factorization.

5561281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 130 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 5561281 is about 2358.2368413711. The cubic root of 5561281 is about 177.1705825676.

The spelling of 5561281 in words is "five million, five hundred sixty-one thousand, two hundred eighty-one".