52528717 has 4 divisors (see below), whose sum is σ = 52543260. Its totient is φ = 52514176.

The previous prime is 52528699. The next prime is 52528733. The reversal of 52528717 is 71782525.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19131876 + 33396841 = 4374^2 + 5779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52528717 is a prime.

It is a super-2 number, since 2×52528717² = 5518532219332178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52528117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2763 + ... + 10615.

It is an arithmetic number, because the mean of its divisors is an integer number (13135815).

Almost surely, 2^52528717 is an apocalyptic number.

It is an amenable number.

52528717 is a deficient number, since it is larger than the sum of its proper divisors (14543).

52528717 is an equidigital number, since it uses as much as digits as its factorization.

52528717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14542.

The product of its digits is 39200, while the sum is 37.

The square root of 52528717 is about 7247.6697634481. The cubic root of 52528717 is about 374.5118792811.

The spelling of 52528717 in words is "fifty-two million, five hundred twenty-eight thousand, seven hundred seventeen".