52520515 has 8 divisors (see below), whose sum is σ = 63156960. Its totient is φ = 41928192.

The previous prime is 52520513. The next prime is 52520519. The reversal of 52520515 is 51502525.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 52520515 - 2¹ = 52520513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52520515.

It is not an unprimeable number, because it can be changed into a prime (52520513) 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 7 ways as a sum of consecutive naturals, for example, 8350 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (7894620).

Almost surely, 2^52520515 is an apocalyptic number.

52520515 is a deficient number, since it is larger than the sum of its proper divisors (10636445).

52520515 is a wasteful number, since it uses less digits than its factorization.

52520515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22061.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 52520515 is about 7247.1039043193. The cubic root of 52520515 is about 374.4923857768.

It can be divided in two parts, 52520 and 515, that added together give a palindrome (53035).

The spelling of 52520515 in words is "fifty-two million, five hundred twenty thousand, five hundred fifteen".