73172315 has 16 divisors (see below), whose sum is σ = 92060928. Its totient is φ = 55726176.

The previous prime is 73172303. The next prime is 73172339. The reversal of 73172315 is 51327137.

It is a cyclic number.

It is not a de Polignac number, because 73172315 - 2⁶ = 73172251 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24704 + ... + 27506.

It is an arithmetic number, because the mean of its divisors is an integer number (5753808).

Almost surely, 2^73172315 is an apocalyptic number.

73172315 is a deficient number, since it is larger than the sum of its proper divisors (18888613).

73172315 is a wasteful number, since it uses less digits than its factorization.

73172315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its digits is 4410, while the sum is 29.

The square root of 73172315 is about 8554.0817742175. The cubic root of 73172315 is about 418.2625027123.

The spelling of 73172315 in words is "seventy-three million, one hundred seventy-two thousand, three hundred fifteen".