97173515 has 4 divisors (see below), whose sum is σ = 116608224. Its totient is φ = 77738808.

The previous prime is 97173509. The next prime is 97173529. The reversal of 97173515 is 51537179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51537179 = 349 ⋅147671.

It is a cyclic number.

It is not a de Polignac number, because 97173515 - 2¹² = 97169419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9717347 + ... + 9717356.

It is an arithmetic number, because the mean of its divisors is an integer number (29152056).

Almost surely, 2^97173515 is an apocalyptic number.

97173515 is a deficient number, since it is larger than the sum of its proper divisors (19434709).

97173515 is a wasteful number, since it uses less digits than its factorization.

97173515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19434708.

The product of its digits is 33075, while the sum is 38.

The square root of 97173515 is about 9857.6627554406. The cubic root of 97173515 is about 459.7438949321.

The spelling of 97173515 in words is "ninety-seven million, one hundred seventy-three thousand, five hundred fifteen".