97521459 has 16 divisors (see below), whose sum is σ = 150078720. Its totient is φ = 55173600.

The previous prime is 97521439. The next prime is 97521467. The reversal of 97521459 is 95412579.

It is not a de Polignac number, because 97521459 - 2¹⁷ = 97390387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97521459.

It is not an unprimeable number, because it can be changed into a prime (97521409) 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 in 15 ways as a sum of consecutive naturals, for example, 20869 + ... + 25110.

It is an arithmetic number, because the mean of its divisors is an integer number (9379920).

Almost surely, 2^97521459 is an apocalyptic number.

97521459 is a deficient number, since it is larger than the sum of its proper divisors (52557261).

97521459 is a wasteful number, since it uses less digits than its factorization.

97521459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46090.

The product of its digits is 113400, while the sum is 42.

The square root of 97521459 is about 9875.2953879871. The cubic root of 97521459 is about 460.2919680789.

It can be divided in two parts, 9752 and 1459, that added together give a palindrome (11211).

The spelling of 97521459 in words is "ninety-seven million, five hundred twenty-one thousand, four hundred fifty-nine".