97521583 has 2 divisors, whose sum is σ = 97521584. Its totient is φ = 97521582.

The previous prime is 97521581. The next prime is 97521607. The reversal of 97521583 is 38512579.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97521583 - 2¹ = 97521581 is a prime.

Together with 97521581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97521581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48760791 + 48760792.

It is an arithmetic number, because the mean of its divisors is an integer number (48760792).

Almost surely, 2^97521583 is an apocalyptic number.

97521583 is a deficient number, since it is larger than the sum of its proper divisors (1).

97521583 is an equidigital number, since it uses as much as digits as its factorization.

97521583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 97521583 is about 9875.3016662784. The cubic root of 97521583 is about 460.2921631682.

The spelling of 97521583 in words is "ninety-seven million, five hundred twenty-one thousand, five hundred eighty-three".