97424521 has 4 divisors (see below), whose sum is σ = 97506052. Its totient is φ = 97342992.

The previous prime is 97424479. The next prime is 97424531. The reversal of 97424521 is 12542479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 91948921 = 2340^2 + 9589^2 .

It is a cyclic number.

It is not a de Polignac number, because 97424521 - 2¹⁹ = 96900233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97424531) 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 3 ways as a sum of consecutive naturals, for example, 38946 + ... + 41371.

It is an arithmetic number, because the mean of its divisors is an integer number (24376513).

Almost surely, 2^97424521 is an apocalyptic number.

It is an amenable number.

97424521 is a deficient number, since it is larger than the sum of its proper divisors (81531).

97424521 is a wasteful number, since it uses less digits than its factorization.

97424521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81530.

The product of its digits is 20160, while the sum is 34.

The square root of 97424521 is about 9870.3860613453. The cubic root of 97424521 is about 460.1394048185.

The spelling of 97424521 in words is "ninety-seven million, four hundred twenty-four thousand, five hundred twenty-one".