53217719 has 2 divisors, whose sum is σ = 53217720. Its totient is φ = 53217718.

The previous prime is 53217641. The next prime is 53217721. The reversal of 53217719 is 91771235.

It is a happy number.

53217719 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53217719 is a prime.

It is a super-2 number, since 2×53217719² = 5664251231125922, which contains 22 as substring.

Together with 53217721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53217739) 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, 26608859 + 26608860.

It is an arithmetic number, because the mean of its divisors is an integer number (26608860).

Almost surely, 2^53217719 is an apocalyptic number.

53217719 is a deficient number, since it is larger than the sum of its proper divisors (1).

53217719 is an equidigital number, since it uses as much as digits as its factorization.

53217719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 35.

The square root of 53217719 is about 7295.0475666715. The cubic root of 53217719 is about 376.1422216432.

The spelling of 53217719 in words is "fifty-three million, two hundred seventeen thousand, seven hundred nineteen".