52217689 has 2 divisors, whose sum is σ = 52217690. Its totient is φ = 52217688.

The previous prime is 52217677. The next prime is 52217717. The reversal of 52217689 is 98671225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 2585664 = 7045^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 52217689 - 2¹¹ = 52215641 is a prime.

It is not a weakly prime, because it can be changed into another prime (52287689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26108844 + 26108845.

It is an arithmetic number, because the mean of its divisors is an integer number (26108845).

Almost surely, 2^52217689 is an apocalyptic number.

It is an amenable number.

52217689 is a deficient number, since it is larger than the sum of its proper divisors (1).

52217689 is an equidigital number, since it uses as much as digits as its factorization.

52217689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 52217689 is about 7226.1808031629. The cubic root of 52217689 is about 373.7712409489.

The spelling of 52217689 in words is "fifty-two million, two hundred seventeen thousand, six hundred eighty-nine".