97528821 has 16 divisors (see below), whose sum is σ = 144560640. Its totient is φ = 58080960.

The previous prime is 97528799. The next prime is 97528841. The reversal of 97528821 is 12882579.

It is not a de Polignac number, because 97528821 - 2⁵ = 97528789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97528841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39126 + ... + 41543.

It is an arithmetic number, because the mean of its divisors is an integer number (9035040).

Almost surely, 2^97528821 is an apocalyptic number.

It is an amenable number.

97528821 is a deficient number, since it is larger than the sum of its proper divisors (47031819).

97528821 is a wasteful number, since it uses less digits than its factorization.

97528821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80716.

The product of its digits is 80640, while the sum is 42.

The square root of 97528821 is about 9875.6681292964. The cubic root of 97528821 is about 460.3035504330.

The spelling of 97528821 in words is "ninety-seven million, five hundred twenty-eight thousand, eight hundred twenty-one".