65528538 has 8 divisors (see below), whose sum is σ = 131057088. Its totient is φ = 21842844.

The previous prime is 65528509. The next prime is 65528539. The reversal of 65528538 is 83582556.

It is a sphenic number, since it is the product of 3 distinct primes.

65528538 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 65528538.

It is not an unprimeable number, because it can be changed into a prime (65528539) 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 3 ways as a sum of consecutive naturals, for example, 5460706 + ... + 5460717.

It is an arithmetic number, because the mean of its divisors is an integer number (16382136).

Almost surely, 2^65528538 is an apocalyptic number.

65528538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65528538 is a wasteful number, since it uses less digits than its factorization.

65528538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921428.

The product of its digits is 288000, while the sum is 42.

The square root of 65528538 is about 8094.9699196476. The cubic root of 65528538 is about 403.1594334147.

It can be divided in two parts, 65528 and 538, that added together give a palindrome (66066).

The spelling of 65528538 in words is "sixty-five million, five hundred twenty-eight thousand, five hundred thirty-eight".