52242181 has 2 divisors, whose sum is σ = 52242182. Its totient is φ = 52242180.

The previous prime is 52242167. The next prime is 52242209. The reversal of 52242181 is 18124225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39753025 + 12489156 = 6305^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 52242181 - 2⁷ = 52242053 is a prime.

It is a super-2 number, since 2×52242181² = 5458490951273522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52242101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26121090 + 26121091.

It is an arithmetic number, because the mean of its divisors is an integer number (26121091).

Almost surely, 2^52242181 is an apocalyptic number.

It is an amenable number.

52242181 is a deficient number, since it is larger than the sum of its proper divisors (1).

52242181 is an equidigital number, since it uses as much as digits as its factorization.

52242181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 25.

The square root of 52242181 is about 7227.8752756256. The cubic root of 52242181 is about 373.8296692615.

The spelling of 52242181 in words is "fifty-two million, two hundred forty-two thousand, one hundred eighty-one".