97883521 has 2 divisors, whose sum is σ = 97883522. Its totient is φ = 97883520.

The previous prime is 97883519. The next prime is 97883549. The reversal of 97883521 is 12538879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 22193521 = 8700^2 + 4711^2 .

It is a cyclic number.

It is not a de Polignac number, because 97883521 - 2¹ = 97883519 is a prime.

Together with 97883519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (97883021) 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, 48941760 + 48941761.

It is an arithmetic number, because the mean of its divisors is an integer number (48941761).

Almost surely, 2^97883521 is an apocalyptic number.

It is an amenable number.

97883521 is a deficient number, since it is larger than the sum of its proper divisors (1).

97883521 is an equidigital number, since it uses as much as digits as its factorization.

97883521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 97883521 is about 9893.6101095606. The cubic root of 97883521 is about 460.8608972639.

The spelling of 97883521 in words is "ninety-seven million, eight hundred eighty-three thousand, five hundred twenty-one".