5721493 has 2 divisors, whose sum is σ = 5721494. Its totient is φ = 5721492.

The previous prime is 5721481. The next prime is 5721517. The reversal of 5721493 is 3941275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4915089 + 806404 = 2217^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721493 - 2⁵ = 5721461 is a prime.

5721493 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5721433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860746 + 2860747.

It is an arithmetic number, because the mean of its divisors is an integer number (2860747).

Almost surely, 2^5721493 is an apocalyptic number.

It is an amenable number.

5721493 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721493 is an equidigital number, since it uses as much as digits as its factorization.

5721493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 5721493 is about 2391.9642555858. The cubic root of 5721493 is about 178.8558393194.

The spelling of 5721493 in words is "five million, seven hundred twenty-one thousand, four hundred ninety-three".