60331721 has 2 divisors, whose sum is σ = 60331722. Its totient is φ = 60331720.

The previous prime is 60331703. The next prime is 60331729. The reversal of 60331721 is 12713306.

It is a happy number.

60331721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 9066121 = 7160^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 60331721 - 2¹⁸ = 60069577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (60331729) 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, 30165860 + 30165861.

It is an arithmetic number, because the mean of its divisors is an integer number (30165861).

Almost surely, 2^60331721 is an apocalyptic number.

It is an amenable number.

60331721 is a deficient number, since it is larger than the sum of its proper divisors (1).

60331721 is an equidigital number, since it uses as much as digits as its factorization.

60331721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 60331721 is about 7767.3496766915. The cubic root of 60331721 is about 392.2069073776.

The spelling of 60331721 in words is "sixty million, three hundred thirty-one thousand, seven hundred twenty-one".