52781171 has 2 divisors, whose sum is σ = 52781172. Its totient is φ = 52781170.

The previous prime is 52781161. The next prime is 52781249. The reversal of 52781171 is 17118725.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52781171 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_3157772 and since 52781171 and 3157772 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (52781101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390585 + 26390586.

It is an arithmetic number, because the mean of its divisors is an integer number (26390586).

Almost surely, 2^52781171 is an apocalyptic number.

52781171 is a deficient number, since it is larger than the sum of its proper divisors (1).

52781171 is an equidigital number, since it uses as much as digits as its factorization.

52781171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 32.

The square root of 52781171 is about 7265.0651063841. The cubic root of 52781171 is about 375.1108910571.

Adding to 52781171 its reverse (17118725), we get a palindrome (69899896).

The spelling of 52781171 in words is "fifty-two million, seven hundred eighty-one thousand, one hundred seventy-one".