73161133 has 4 divisors (see below), whose sum is σ = 73372320. Its totient is φ = 72949948.

The previous prime is 73161131. The next prime is 73161139. The reversal of 73161133 is 33116137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73161133 - 2¹ = 73161131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73161098 and 73161107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73161131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105073 + ... + 105766.

It is an arithmetic number, because the mean of its divisors is an integer number (18343080).

Almost surely, 2^73161133 is an apocalyptic number.

It is an amenable number.

73161133 is a deficient number, since it is larger than the sum of its proper divisors (211187).

73161133 is a wasteful number, since it uses less digits than its factorization.

73161133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211186.

The product of its digits is 1134, while the sum is 25.

The square root of 73161133 is about 8553.4281431482. The cubic root of 73161133 is about 418.2411957030.

The spelling of 73161133 in words is "seventy-three million, one hundred sixty-one thousand, one hundred thirty-three".