539772281 has 2 divisors, whose sum is σ = 539772282. Its totient is φ = 539772280.

The previous prime is 539772271. The next prime is 539772313. The reversal of 539772281 is 182277935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320732281 + 219040000 = 17909^2 + 14800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-539772281 is a prime.

It is a super-2 number, since 2×539772281² = 582708230671885922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (539772271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269886140 + 269886141.

It is an arithmetic number, because the mean of its divisors is an integer number (269886141).

Almost surely, 2^539772281 is an apocalyptic number.

It is an amenable number.

539772281 is a deficient number, since it is larger than the sum of its proper divisors (1).

539772281 is an equidigital number, since it uses as much as digits as its factorization.

539772281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 539772281 is about 23232.9998278311. Note that the first 3 decimals coincide. The cubic root of 539772281 is about 814.2108013908.

The spelling of 539772281 in words is "five hundred thirty-nine million, seven hundred seventy-two thousand, two hundred eighty-one".