52515645 has 64 divisors (see below), whose sum is σ = 104939520. Its totient is φ = 21835008.

The previous prime is 52515613. The next prime is 52515649. The reversal of 52515645 is 54651525.

52515645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52515645 - 2⁵ = 52515613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52515649) 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 63 ways as a sum of consecutive naturals, for example, 107592 + ... + 108078.

It is an arithmetic number, because the mean of its divisors is an integer number (1639680).

Almost surely, 2^52515645 is an apocalyptic number.

It is an amenable number.

52515645 is a deficient number, since it is larger than the sum of its proper divisors (52423875).

52515645 is a wasteful number, since it uses less digits than its factorization.

52515645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its digits is 30000, while the sum is 33.

The square root of 52515645 is about 7246.7679002435. The cubic root of 52515645 is about 374.4808103997.

The spelling of 52515645 in words is "fifty-two million, five hundred fifteen thousand, six hundred forty-five".