73559161 has 4 divisors (see below), whose sum is σ = 79217572. Its totient is φ = 67900752.

The previous prime is 73559159. The next prime is 73559173. The reversal of 73559161 is 16195537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16195537 = 919 ⋅17623.

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 58813561 = 3840^2 + 7669^2 .

It is a cyclic number.

It is not a de Polignac number, because 73559161 - 2¹ = 73559159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73559161.

It is not an unprimeable number, because it can be changed into a prime (73559141) 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 3 ways as a sum of consecutive naturals, for example, 2829186 + ... + 2829211.

It is an arithmetic number, because the mean of its divisors is an integer number (19804393).

Almost surely, 2^73559161 is an apocalyptic number.

It is an amenable number.

73559161 is a deficient number, since it is larger than the sum of its proper divisors (5658411).

73559161 is a wasteful number, since it uses less digits than its factorization.

73559161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658410.

The product of its digits is 28350, while the sum is 37.

The square root of 73559161 is about 8576.6637453033. The cubic root of 73559161 is about 418.9982949826.

The spelling of 73559161 in words is "seventy-three million, five hundred fifty-nine thousand, one hundred sixty-one".