58212281 has 2 divisors, whose sum is σ = 58212282. Its totient is φ = 58212280.

The previous prime is 58212269. The next prime is 58212283. The reversal of 58212281 is 18221285.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56866681 + 1345600 = 7541^2 + 1160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58212281 is a prime.

It is a super-2 number, since 2×58212281² = 6777339318445922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 58212283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (58212283) 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, 29106140 + 29106141.

It is an arithmetic number, because the mean of its divisors is an integer number (29106141).

Almost surely, 2^58212281 is an apocalyptic number.

It is an amenable number.

58212281 is a deficient number, since it is larger than the sum of its proper divisors (1).

58212281 is an equidigital number, since it uses as much as digits as its factorization.

58212281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 29.

The square root of 58212281 is about 7629.6973072331. The cubic root of 58212281 is about 387.5593382595.

The spelling of 58212281 in words is "fifty-eight million, two hundred twelve thousand, two hundred eighty-one".