5261281 has 4 divisors (see below), whose sum is σ = 5270832. Its totient is φ = 5251732.

The previous prime is 5261261. The next prime is 5261317. The reversal of 5261281 is 1821625.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5261281 - 2⁷ = 5261153 is a prime.

It is a super-2 number, since 2×5261281² = 55362155521922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

5261281 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (5261251) 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, 3895 + ... + 5068.

It is an arithmetic number, because the mean of its divisors is an integer number (1317708).

Almost surely, 2^5261281 is an apocalyptic number.

It is an amenable number.

5261281 is a deficient number, since it is larger than the sum of its proper divisors (9551).

5261281 is an equidigital number, since it uses as much as digits as its factorization.

5261281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550.

The product of its digits is 960, while the sum is 25.

The square root of 5261281 is about 2293.7482425061. The cubic root of 5261281 is about 173.9257290810.

The spelling of 5261281 in words is "five million, two hundred sixty-one thousand, two hundred eighty-one".