97215289 has 8 divisors (see below), whose sum is σ = 98122752. Its totient is φ = 96312480.

The previous prime is 97215277. The next prime is 97215301. The reversal of 97215289 is 98251279.

It is an interprime number because it is at equal distance from previous prime (97215277) and next prime (97215301).

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

It is a cyclic number.

It is not a de Polignac number, because 97215289 - 2¹⁷ = 97084217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97215269) 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, 51024 + ... + 52894.

It is an arithmetic number, because the mean of its divisors is an integer number (12265344).

Almost surely, 2^97215289 is an apocalyptic number.

It is an amenable number.

97215289 is a deficient number, since it is larger than the sum of its proper divisors (907463).

97215289 is a wasteful number, since it uses less digits than its factorization.

97215289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327.

The product of its digits is 90720, while the sum is 43.

The square root of 97215289 is about 9859.7813870288. The cubic root of 97215289 is about 459.8097653840.

It can be divided in two parts, 972 and 15289, that added together give a palindrome (16261).

The spelling of 97215289 in words is "ninety-seven million, two hundred fifteen thousand, two hundred eighty-nine".