5205281 has 4 divisors (see below), whose sum is σ = 5511492. Its totient is φ = 4899072.

The previous prime is 5205269. The next prime is 5205283. The reversal of 5205281 is 1825025.

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 2298256 + 2907025 = 1516^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 5205281 - 2¹⁰ = 5204257 is a prime.

It is a super-2 number, since 2×5205281² = 54189900577922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5205283) 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, 153080 + ... + 153113.

It is an arithmetic number, because the mean of its divisors is an integer number (1377873).

Almost surely, 2^5205281 is an apocalyptic number.

It is an amenable number.

5205281 is a deficient number, since it is larger than the sum of its proper divisors (306211).

5205281 is a wasteful number, since it uses less digits than its factorization.

5205281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306210.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 5205281 is about 2281.5084922042. The cubic root of 5205281 is about 173.3064500549.

The spelling of 5205281 in words is "five million, two hundred five thousand, two hundred eighty-one".