5721523 has 2 divisors, whose sum is σ = 5721524. Its totient is φ = 5721522.

The previous prime is 5721517. The next prime is 5721539. The reversal of 5721523 is 3251275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5721523 - 2⁹ = 5721011 is a prime.

It is not a weakly prime, because it can be changed into another prime (5721563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860761 + 2860762.

It is an arithmetic number, because the mean of its divisors is an integer number (2860762).

Almost surely, 2^5721523 is an apocalyptic number.

5721523 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721523 is an equidigital number, since it uses as much as digits as its factorization.

5721523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 5721523 is about 2391.9705265743. The cubic root of 5721523 is about 178.8561519223.

Adding to 5721523 its reverse (3251275), we get a palindrome (8972798).

The spelling of 5721523 in words is "five million, seven hundred twenty-one thousand, five hundred twenty-three".