5123281 has 2 divisors, whose sum is σ = 5123282. Its totient is φ = 5123280.

The previous prime is 5123269. The next prime is 5123299. The reversal of 5123281 is 1823215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 370881 = 2180^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 5123281 - 2²¹ = 3026129 is a prime.

It is a super-2 number, since 2×5123281² = 52496016409922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5123201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561640 + 2561641.

It is an arithmetic number, because the mean of its divisors is an integer number (2561641).

Almost surely, 2^5123281 is an apocalyptic number.

It is an amenable number.

5123281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5123281 is an equidigital number, since it uses as much as digits as its factorization.

5123281 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5123281 is about 2263.4665891062. The cubic root of 5123281 is about 172.3915834881.

Adding to 5123281 its reverse (1823215), we get a palindrome (6946496).

It can be divided in two parts, 51 and 23281, that added together give a palindrome (23332).

The spelling of 5123281 in words is "five million, one hundred twenty-three thousand, two hundred eighty-one".