52717681 has 2 divisors, whose sum is σ = 52717682. Its totient is φ = 52717680.

The previous prime is 52717673. The next prime is 52717703. The reversal of 52717681 is 18671725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 2944656 = 7055^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 52717681 - 2³ = 52717673 is a prime.

It is a super-2 number, since 2×52717681² = 5558307780035522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52717681.

It is not a weakly prime, because it can be changed into another prime (52717601) 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 as a sum of consecutive naturals, namely, 26358840 + 26358841.

It is an arithmetic number, because the mean of its divisors is an integer number (26358841).

Almost surely, 2^52717681 is an apocalyptic number.

It is an amenable number.

52717681 is a deficient number, since it is larger than the sum of its proper divisors (1).

52717681 is an equidigital number, since it uses as much as digits as its factorization.

52717681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 52717681 is about 7260.6942505521. The cubic root of 52717681 is about 374.9604248607.

The spelling of 52717681 in words is "fifty-two million, seven hundred seventeen thousand, six hundred eighty-one".