97581223 has 4 divisors (see below), whose sum is σ = 97612528. Its totient is φ = 97549920.

The previous prime is 97581199. The next prime is 97581227. The reversal of 97581223 is 32218579.

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

It is a cyclic number.

It is not a de Polignac number, because 97581223 - 2²¹ = 95484071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97581227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10386 + ... + 17407.

It is an arithmetic number, because the mean of its divisors is an integer number (24403132).

Almost surely, 2^97581223 is an apocalyptic number.

97581223 is a deficient number, since it is larger than the sum of its proper divisors (31305).

97581223 is a wasteful number, since it uses less digits than its factorization.

97581223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31304.

The product of its digits is 30240, while the sum is 37.

The square root of 97581223 is about 9878.3208593364. The cubic root of 97581223 is about 460.3859756678.

The spelling of 97581223 in words is "ninety-seven million, five hundred eighty-one thousand, two hundred twenty-three".