20052515 has 12 divisors (see below), whose sum is σ = 27992016. Its totient is φ = 13750128.

The previous prime is 20052479. The next prime is 20052521. The reversal of 20052515 is 51525002.

It is not a de Polignac number, because 20052515 - 2¹² = 20048419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40679 + ... + 41168.

It is an arithmetic number, because the mean of its divisors is an integer number (2332668).

Almost surely, 2^20052515 is an apocalyptic number.

20052515 is a deficient number, since it is larger than the sum of its proper divisors (7939501).

20052515 is an equidigital number, since it uses as much as digits as its factorization.

20052515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81866 (or 81859 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 20052515 is about 4478.0034613653. The cubic root of 20052515 is about 271.6791334228.

Adding to 20052515 its reverse (51525002), we get a palindrome (71577517).

The spelling of 20052515 in words is "twenty million, fifty-two thousand, five hundred fifteen".