58218161 has 2 divisors, whose sum is σ = 58218162. Its totient is φ = 58218160.

The previous prime is 58218151. The next prime is 58218163. The reversal of 58218161 is 16181285.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 1366561 = 7540^2 + 1169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58218161 is a prime.

Together with 58218163, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3462566 and since 58218161 and 3462566 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (58218163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29109080 + 29109081.

It is an arithmetic number, because the mean of its divisors is an integer number (29109081).

Almost surely, 2^58218161 is an apocalyptic number.

It is an amenable number.

58218161 is a deficient number, since it is larger than the sum of its proper divisors (1).

58218161 is an equidigital number, since it uses as much as digits as its factorization.

58218161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 32.

The square root of 58218161 is about 7630.0826338907. The cubic root of 58218161 is about 387.5723868932.

The spelling of 58218161 in words is "fifty-eight million, two hundred eighteen thousand, one hundred sixty-one".