71733161 has 4 divisors (see below), whose sum is σ = 71855952. Its totient is φ = 71610372.

The previous prime is 71733131. The next prime is 71733169. The reversal of 71733161 is 16133717.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16133717 = 19 ⋅849143.

It is a cyclic number.

It is not a de Polignac number, because 71733161 - 2⁶ = 71733097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71733169) 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, 60515 + ... + 61688.

It is an arithmetic number, because the mean of its divisors is an integer number (17963988).

Almost surely, 2^71733161 is an apocalyptic number.

It is an amenable number.

71733161 is a deficient number, since it is larger than the sum of its proper divisors (122791).

71733161 is a wasteful number, since it uses less digits than its factorization.

71733161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122790.

The product of its digits is 2646, while the sum is 29.

The square root of 71733161 is about 8469.5431399810. The cubic root of 71733161 is about 415.5021955463.

Adding to 71733161 its reverse (16133717), we get a palindrome (87866878).

The spelling of 71733161 in words is "seventy-one million, seven hundred thirty-three thousand, one hundred sixty-one".