97221255 has 8 divisors (see below), whose sum is σ = 155554032. Its totient is φ = 51851328.

The previous prime is 97221227. The next prime is 97221259. The reversal of 97221255 is 55212279.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97221255 - 2⁶ = 97221191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97221259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3240694 + ... + 3240723.

It is an arithmetic number, because the mean of its divisors is an integer number (19444254).

Almost surely, 2^97221255 is an apocalyptic number.

97221255 is a deficient number, since it is larger than the sum of its proper divisors (58332777).

97221255 is a wasteful number, since it uses less digits than its factorization.

97221255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481425.

The product of its digits is 12600, while the sum is 33.

The square root of 97221255 is about 9860.0839245921. The cubic root of 97221255 is about 459.8191712055.

The spelling of 97221255 in words is "ninety-seven million, two hundred twenty-one thousand, two hundred fifty-five".