5721281 has 2 divisors, whose sum is σ = 5721282. Its totient is φ = 5721280.

The previous prime is 5721271. The next prime is 5721307. The reversal of 5721281 is 1821275.

It is an a-pointer prime, because the next prime (5721307) can be obtained adding 5721281 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 80656 = 2375^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721281 - 2²² = 1526977 is a prime.

It is a super-2 number, since 2×5721281² = 65466112561922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5721281.

It is not a weakly prime, because it can be changed into another prime (5721211) 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, 2860640 + 2860641.

It is an arithmetic number, because the mean of its divisors is an integer number (2860641).

Almost surely, 2^5721281 is an apocalyptic number.

It is an amenable number.

5721281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721281 is an equidigital number, since it uses as much as digits as its factorization.

5721281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 26.

The square root of 5721281 is about 2391.9199401318. The cubic root of 5721281 is about 178.8536302278.

The spelling of 5721281 in words is "five million, seven hundred twenty-one thousand, two hundred eighty-one".