5312281 has 4 divisors (see below), whose sum is σ = 5720932. Its totient is φ = 4903632.

The previous prime is 5312273. The next prime is 5312303. The reversal of 5312281 is 1822135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2752281 + 2560000 = 1659^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 5312281 - 2³ = 5312273 is a prime.

It is a super-2 number, since 2×5312281² = 56440658845922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5312221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204306 + ... + 204331.

It is an arithmetic number, because the mean of its divisors is an integer number (1430233).

Almost surely, 2^5312281 is an apocalyptic number.

It is an amenable number.

5312281 is a deficient number, since it is larger than the sum of its proper divisors (408651).

5312281 is a wasteful number, since it uses less digits than its factorization.

5312281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408650.

The product of its digits is 480, while the sum is 22.

The square root of 5312281 is about 2304.8386060633. The cubic root of 5312281 is about 174.4859034652.

The spelling of 5312281 in words is "five million, three hundred twelve thousand, two hundred eighty-one".