58255781 has 2 divisors, whose sum is σ = 58255782. Its totient is φ = 58255780.

The previous prime is 58255777. The next prime is 58255783. The reversal of 58255781 is 18755285.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54390625 + 3865156 = 7375^2 + 1966^2 .

It is a cyclic number.

It is not a de Polignac number, because 58255781 - 2² = 58255777 is a prime.

It is a super-2 number, since 2×58255781² = 6787472039839922, which contains 22 as substring.

Together with 58255783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58255783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29127890 + 29127891.

It is an arithmetic number, because the mean of its divisors is an integer number (29127891).

Almost surely, 2^58255781 is an apocalyptic number.

It is an amenable number.

58255781 is a deficient number, since it is larger than the sum of its proper divisors (1).

58255781 is an equidigital number, since it uses as much as digits as its factorization.

58255781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112000, while the sum is 41.

The square root of 58255781 is about 7632.5474777429. The cubic root of 58255781 is about 387.6558507327.

The spelling of 58255781 in words is "fifty-eight million, two hundred fifty-five thousand, seven hundred eighty-one".