52863681 has 16 divisors (see below), whose sum is σ = 79903040. Its totient is φ = 30818880.

The previous prime is 52863677. The next prime is 52863691. The reversal of 52863681 is 18636825.

It is a happy number.

It is not a de Polignac number, because 52863681 - 2² = 52863677 is a prime.

It is a super-2 number, since 2×52863681² = 5589137537739522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52863661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34930 + ... + 36411.

It is an arithmetic number, because the mean of its divisors is an integer number (4993940).

Almost surely, 2^52863681 is an apocalyptic number.

It is an amenable number.

52863681 is a deficient number, since it is larger than the sum of its proper divisors (27039359).

52863681 is a wasteful number, since it uses less digits than its factorization.

52863681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71376.

The product of its digits is 69120, while the sum is 39.

The square root of 52863681 is about 7270.7414339942. The cubic root of 52863681 is about 375.3062529341.

The spelling of 52863681 in words is "fifty-two million, eight hundred sixty-three thousand, six hundred eighty-one".