65521113 has 16 divisors (see below), whose sum is σ = 101047296. Its totient is φ = 36988560.

The previous prime is 65521103. The next prime is 65521123. The reversal of 65521113 is 31112556.

It is an interprime number because it is at equal distance from previous prime (65521103) and next prime (65521123).

It is not a de Polignac number, because 65521113 - 2¹² = 65517017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65521103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17053 + ... + 20538.

It is an arithmetic number, because the mean of its divisors is an integer number (6315456).

Almost surely, 2^65521113 is an apocalyptic number.

It is an amenable number.

65521113 is a deficient number, since it is larger than the sum of its proper divisors (35526183).

65521113 is a wasteful number, since it uses less digits than its factorization.

65521113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37684.

The product of its digits is 900, while the sum is 24.

The square root of 65521113 is about 8094.5112885214. The cubic root of 65521113 is about 403.1442055870.

Adding to 65521113 its reverse (31112556), we get a palindrome (96633669).

The spelling of 65521113 in words is "sixty-five million, five hundred twenty-one thousand, one hundred thirteen".