97521760 has 96 divisors (see below), whose sum is σ = 268833600. Its totient is φ = 33417216.

The previous prime is 97521731. The next prime is 97521761. The reversal of 97521760 is 6712579.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97521761) 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, 53992 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (2800350).

Almost surely, 2^97521760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97521760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134416800).

97521760 is an abundant number, since it is smaller than the sum of its proper divisors (171311840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97521760 is a wasteful number, since it uses less digits than its factorization.

97521760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 97521760 is about 9875.3106280258. The cubic root of 97521760 is about 460.2924416422.

The spelling of 97521760 in words is "ninety-seven million, five hundred twenty-one thousand, seven hundred sixty".