75066281 has 2 divisors, whose sum is σ = 75066282. Its totient is φ = 75066280.

The previous prime is 75066269. The next prime is 75066287. The reversal of 75066281 is 18266057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 2544025 = 8516^2 + 1595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75066281 is a prime.

It is a super-2 number, since 2×75066281² = 11269893086341922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75066287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37533140 + 37533141.

It is an arithmetic number, because the mean of its divisors is an integer number (37533141).

Almost surely, 2^75066281 is an apocalyptic number.

It is an amenable number.

75066281 is a deficient number, since it is larger than the sum of its proper divisors (1).

75066281 is an equidigital number, since it uses as much as digits as its factorization.

75066281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 75066281 is about 8664.0799280708. The cubic root of 75066281 is about 421.8405262073.

The spelling of 75066281 in words is "seventy-five million, sixty-six thousand, two hundred eighty-one".