65521832 has 16 divisors (see below), whose sum is σ = 123277140. Its totient is φ = 32647936.

The previous prime is 65521811. The next prime is 65521837. The reversal of 65521832 is 23812556.

It can be written as a sum of positive squares in 2 ways, for example, as 43375396 + 22146436 = 6586^2 + 4706^2 .

It is a super-2 number, since 2×65521832² = 8586220937272448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65521837) 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, 11633 + ... + 16320.

Almost surely, 2^65521832 is an apocalyptic number.

It is an amenable number.

65521832 is a deficient number, since it is larger than the sum of its proper divisors (57755308).

65521832 is a wasteful number, since it uses less digits than its factorization.

65521832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28252 (or 28248 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 65521832 is about 8094.5557012105. Note that the first 3 decimals coincide. The cubic root of 65521832 is about 403.1456802243.

The spelling of 65521832 in words is "sixty-five million, five hundred twenty-one thousand, eight hundred thirty-two".