5235721 has 2 divisors, whose sum is σ = 5235722. Its totient is φ = 5235720.

The previous prime is 5235679. The next prime is 5235731. The reversal of 5235721 is 1275325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 741321 = 2120^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 5235721 - 2¹³ = 5227529 is a prime.

5235721 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5235731) 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, 2617860 + 2617861.

It is an arithmetic number, because the mean of its divisors is an integer number (2617861).

Almost surely, 2^5235721 is an apocalyptic number.

It is an amenable number.

5235721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5235721 is an equidigital number, since it uses as much as digits as its factorization.

5235721 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5235721 is about 2288.1697926509. The cubic root of 5235721 is about 173.6436203361.

The spelling of 5235721 in words is "five million, two hundred thirty-five thousand, seven hundred twenty-one".