67052281 has 2 divisors, whose sum is σ = 67052282. Its totient is φ = 67052280.

The previous prime is 67052243. The next prime is 67052303. The reversal of 67052281 is 18225076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59675625 + 7376656 = 7725^2 + 2716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67052281 is a prime.

It is a super-2 number, since 2×67052281² = 8992016774605922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67052201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33526140 + 33526141.

It is an arithmetic number, because the mean of its divisors is an integer number (33526141).

Almost surely, 2^67052281 is an apocalyptic number.

It is an amenable number.

67052281 is a deficient number, since it is larger than the sum of its proper divisors (1).

67052281 is an equidigital number, since it uses as much as digits as its factorization.

67052281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 67052281 is about 8188.5457194791. The cubic root of 67052281 is about 406.2604252630.

The spelling of 67052281 in words is "sixty-seven million, fifty-two thousand, two hundred eighty-one".