65161522 has 4 divisors (see below), whose sum is σ = 97742286. Its totient is φ = 32580760.

The previous prime is 65161519. The next prime is 65161529. The reversal of 65161522 is 22516156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 13623481 = 7179^2 + 3691^2 .

It is not an unprimeable number, because it can be changed into a prime (65161529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16290379 + ... + 16290382.

Almost surely, 2^65161522 is an apocalyptic number.

65161522 is a deficient number, since it is larger than the sum of its proper divisors (32580764).

65161522 is a wasteful number, since it uses less digits than its factorization.

65161522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32580763.

The product of its digits is 3600, while the sum is 28.

The square root of 65161522 is about 8072.2687021679. The cubic root of 65161522 is about 402.4053443041.

Adding to 65161522 its reverse (22516156), we get a palindrome (87677678).

The spelling of 65161522 in words is "sixty-five million, one hundred sixty-one thousand, five hundred twenty-two".