65161033 has 24 divisors (see below), whose sum is σ = 78738432. Its totient is φ = 53724384.

The previous prime is 65161027. The next prime is 65161049. The reversal of 65161033 is 33016156.

65161033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-65161033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65160989 and 65161007.

It is not an unprimeable number, because it can be changed into a prime (65161003) 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 23 ways as a sum of consecutive naturals, for example, 230110 + ... + 230392.

It is an arithmetic number, because the mean of its divisors is an integer number (3280768).

Almost surely, 2^65161033 is an apocalyptic number.

It is an amenable number.

65161033 is a deficient number, since it is larger than the sum of its proper divisors (13577399).

65161033 is a wasteful number, since it uses less digits than its factorization.

65161033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 65161033 is about 8072.2384132284. The cubic root of 65161033 is about 402.4043376942.

Adding to 65161033 its reverse (33016156), we get a palindrome (98177189).

The spelling of 65161033 in words is "sixty-five million, one hundred sixty-one thousand, thirty-three".