99533321 has 2 divisors, whose sum is σ = 99533322. Its totient is φ = 99533320.

The previous prime is 99533303. The next prime is 99533353. The reversal of 99533321 is 12333599.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76387600 + 23145721 = 8740^2 + 4811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99533321 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (99533221) 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, 49766660 + 49766661.

It is an arithmetic number, because the mean of its divisors is an integer number (49766661).

Almost surely, 2^99533321 is an apocalyptic number.

It is an amenable number.

99533321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99533321 is an equidigital number, since it uses as much as digits as its factorization.

99533321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 35.

The square root of 99533321 is about 9976.6387626294. The cubic root of 99533321 is about 463.4357132191.

The spelling of 99533321 in words is "ninety-nine million, five hundred thirty-three thousand, three hundred twenty-one".