97272821 has 8 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 96571120.

The previous prime is 97272767. The next prime is 97272829. The reversal of 97272821 is 12827279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97272821 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 (97272829) 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, 115520 + ... + 116358.

It is an arithmetic number, because the mean of its divisors is an integer number (12247200).

Almost surely, 2^97272821 is an apocalyptic number.

It is an amenable number.

97272821 is a deficient number, since it is larger than the sum of its proper divisors (704779).

97272821 is a wasteful number, since it uses less digits than its factorization.

97272821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539.

The product of its digits is 28224, while the sum is 38.

The square root of 97272821 is about 9862.6984644163. The cubic root of 97272821 is about 459.9004526239.

The spelling of 97272821 in words is "ninety-seven million, two hundred seventy-two thousand, eight hundred twenty-one".