66052515 has 16 divisors (see below), whose sum is σ = 108142848. Its totient is φ = 34408416.

The previous prime is 66052501. The next prime is 66052523. The reversal of 66052515 is 51525066.

It is not a de Polignac number, because 66052515 - 2⁷ = 66052387 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 50559 + ... + 51848.

It is an arithmetic number, because the mean of its divisors is an integer number (6758928).

Almost surely, 2^66052515 is an apocalyptic number.

66052515 is a deficient number, since it is larger than the sum of its proper divisors (42090333).

66052515 is a wasteful number, since it uses less digits than its factorization.

66052515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102458.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 66052515 is about 8127.2698367902. The cubic root of 66052515 is about 404.2311583534.

The spelling of 66052515 in words is "sixty-six million, fifty-two thousand, five hundred fifteen".