52505815 has 8 divisors (see below), whose sum is σ = 64347840. Its totient is φ = 41110752.

The previous prime is 52505813. The next prime is 52505833. The reversal of 52505815 is 51850525.

52505815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52505815 - 2¹ = 52505813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52505813) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 111480 + ... + 111949.

It is an arithmetic number, because the mean of its divisors is an integer number (8043480).

Almost surely, 2^52505815 is an apocalyptic number.

52505815 is a deficient number, since it is larger than the sum of its proper divisors (11842025).

52505815 is a wasteful number, since it uses less digits than its factorization.

52505815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223481.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 52505815 is about 7246.0896351066. The cubic root of 52505815 is about 374.4574435467.

The spelling of 52505815 in words is "fifty-two million, five hundred five thousand, eight hundred fifteen".