52147181 has 2 divisors, whose sum is σ = 52147182. Its totient is φ = 52147180.

The previous prime is 52147163. The next prime is 52147201. The reversal of 52147181 is 18174125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30151081 + 21996100 = 5491^2 + 4690^2 .

It is a cyclic number.

It is not a de Polignac number, because 52147181 - 2¹⁴ = 52130797 is a prime.

It is a super-2 number, since 2×52147181² = 5438656972493522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52144181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26073590 + 26073591.

It is an arithmetic number, because the mean of its divisors is an integer number (26073591).

Almost surely, 2^52147181 is an apocalyptic number.

It is an amenable number.

52147181 is a deficient number, since it is larger than the sum of its proper divisors (1).

52147181 is an equidigital number, since it uses as much as digits as its factorization.

52147181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 52147181 is about 7221.3005061415. The cubic root of 52147181 is about 373.6029344250.

The spelling of 52147181 in words is "fifty-two million, one hundred forty-seven thousand, one hundred eighty-one".