58351981 has 2 divisors, whose sum is σ = 58351982. Its totient is φ = 58351980.

The previous prime is 58351967. The next prime is 58352027. The reversal of 58351981 is 18915385.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 8649481 = 7050^2 + 2941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58351981 is a prime.

It is a super-2 number, since 2×58351981² = 6809907373248722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58351901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29175990 + 29175991.

It is an arithmetic number, because the mean of its divisors is an integer number (29175991).

Almost surely, 2^58351981 is an apocalyptic number.

It is an amenable number.

58351981 is a deficient number, since it is larger than the sum of its proper divisors (1).

58351981 is an equidigital number, since it uses as much as digits as its factorization.

58351981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 40.

The square root of 58351981 is about 7638.8468370560. The cubic root of 58351981 is about 387.8691170300.

The spelling of 58351981 in words is "fifty-eight million, three hundred fifty-one thousand, nine hundred eighty-one".