65528537 has 4 divisors (see below), whose sum is σ = 67126836. Its totient is φ = 63930240.

The previous prime is 65528509. The next prime is 65528539. The reversal of 65528537 is 73582556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18139081 + 47389456 = 4259^2 + 6884^2 .

It is a cyclic number.

It is not a de Polignac number, because 65528537 - 2²² = 61334233 is a prime.

It is a super-2 number, since 2×65528537² = 8587978322720738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1598257 = 65528537 / (6 + 5 + 5 + 2 + 8 + 5 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65528494 and 65528503.

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, 799088 + ... + 799169.

It is an arithmetic number, because the mean of its divisors is an integer number (16781709).

Almost surely, 2^65528537 is an apocalyptic number.

It is an amenable number.

65528537 is a deficient number, since it is larger than the sum of its proper divisors (1598299).

65528537 is a wasteful number, since it uses less digits than its factorization.

65528537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598298.

The product of its digits is 252000, while the sum is 41.

The square root of 65528537 is about 8094.9698578809. The cubic root of 65528537 is about 403.1594313639.

It can be divided in two parts, 655 and 28537, that added together give a palindrome (29192).

The spelling of 65528537 in words is "sixty-five million, five hundred twenty-eight thousand, five hundred thirty-seven".