73172541 has 16 divisors (see below), whose sum is σ = 107514176. Its totient is φ = 43981056.

The previous prime is 73172531. The next prime is 73172549. The reversal of 73172541 is 14527137.

It is not a de Polignac number, because 73172541 - 2¹⁴ = 73156157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73172499 and 73172508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73172549) by changing a digit.

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, 20140 + ... + 23493.

It is an arithmetic number, because the mean of its divisors is an integer number (6719636).

Almost surely, 2^73172541 is an apocalyptic number.

It is an amenable number.

73172541 is a deficient number, since it is larger than the sum of its proper divisors (34341635).

73172541 is a wasteful number, since it uses less digits than its factorization.

73172541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43692.

The product of its digits is 5880, while the sum is 30.

The square root of 73172541 is about 8554.0949842751. The cubic root of 73172541 is about 418.2629333270.

Adding to 73172541 its reverse (14527137), we get a palindrome (87699678).

The spelling of 73172541 in words is "seventy-three million, one hundred seventy-two thousand, five hundred forty-one".