52845681 has 16 divisors (see below), whose sum is σ = 81072000. Its totient is φ = 29993088.

The previous prime is 52845641. The next prime is 52845691. The reversal of 52845681 is 18654825.

52845681 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 52845681 - 2⁷ = 52845553 is a prime.

It is a super-2 number, since 2×52845681² = 5585332000707522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52845601) 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 15 ways as a sum of consecutive naturals, for example, 5316 + ... + 11573.

It is an arithmetic number, because the mean of its divisors is an integer number (5067000).

Almost surely, 2^52845681 is an apocalyptic number.

It is an amenable number.

52845681 is a deficient number, since it is larger than the sum of its proper divisors (28226319).

52845681 is a wasteful number, since it uses less digits than its factorization.

52845681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17048.

The product of its digits is 76800, while the sum is 39.

The square root of 52845681 is about 7269.5034906106. The cubic root of 52845681 is about 375.2636510360.

The spelling of 52845681 in words is "fifty-two million, eight hundred forty-five thousand, six hundred eighty-one".