52181713 has 2 divisors, whose sum is σ = 52181714. Its totient is φ = 52181712.

The previous prime is 52181699. The next prime is 52181719. The reversal of 52181713 is 31718125.

52181713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32182929 + 19998784 = 5673^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 52181713 - 2⁵ = 52181681 is a prime.

It is a super-2 number, since 2×52181713² = 5445862343228738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52181719) 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 as a sum of consecutive naturals, namely, 26090856 + 26090857.

It is an arithmetic number, because the mean of its divisors is an integer number (26090857).

Almost surely, 2^52181713 is an apocalyptic number.

It is an amenable number.

52181713 is a deficient number, since it is larger than the sum of its proper divisors (1).

52181713 is an equidigital number, since it uses as much as digits as its factorization.

52181713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 52181713 is about 7223.6910925094. The cubic root of 52181713 is about 373.6853831760.

Adding to 52181713 its reverse (31718125), we get a palindrome (83899838).

The spelling of 52181713 in words is "fifty-two million, one hundred eighty-one thousand, seven hundred thirteen".