73505161 has 8 divisors (see below), whose sum is σ = 78084864. Its totient is φ = 68953920.

The previous prime is 73505153. The next prime is 73505191. The reversal of 73505161 is 16150537.

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 73505161 - 2³ = 73505153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73505191) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (9760608).

Almost surely, 2^73505161 is an apocalyptic number.

It is an amenable number.

73505161 is a deficient number, since it is larger than the sum of its proper divisors (4579703).

73505161 is a wasteful number, since it uses less digits than its factorization.

73505161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 73505161 is about 8573.5150900899. The cubic root of 73505161 is about 418.8957405831.

Adding to 73505161 its reverse (16150537), we get a palindrome (89655698).

The spelling of 73505161 in words is "seventy-three million, five hundred five thousand, one hundred sixty-one".