96217721 has 2 divisors, whose sum is σ = 96217722. Its totient is φ = 96217720.

The previous prime is 96217687. The next prime is 96217747. The reversal of 96217721 is 12771269.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 1428025 = 9736^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 96217721 - 2⁶ = 96217657 is a prime.

It is equal to p_5555933 and since 96217721 and 5555933 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (96217021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48108860 + 48108861.

It is an arithmetic number, because the mean of its divisors is an integer number (48108861).

Almost surely, 2^96217721 is an apocalyptic number.

It is an amenable number.

96217721 is a deficient number, since it is larger than the sum of its proper divisors (1).

96217721 is an equidigital number, since it uses as much as digits as its factorization.

96217721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 96217721 is about 9809.0632070550. The cubic root of 96217721 is about 458.2315861270.

The spelling of 96217721 in words is "ninety-six million, two hundred seventeen thousand, seven hundred twenty-one".