58191681 has 16 divisors (see below), whose sum is σ = 80557568. Its totient is φ = 37324800.

The previous prime is 58191673. The next prime is 58191689. The reversal of 58191681 is 18619185.

It is an interprime number because it is at equal distance from previous prime (58191673) and next prime (58191689).

It is not a de Polignac number, because 58191681 - 2³ = 58191673 is a prime.

It is a super-2 number, since 2×58191681² = 6772543475211522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58191689) 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 in 15 ways as a sum of consecutive naturals, for example, 15105 + ... + 18561.

It is an arithmetic number, because the mean of its divisors is an integer number (5034848).

Almost surely, 2^58191681 is an apocalyptic number.

It is an amenable number.

58191681 is a deficient number, since it is larger than the sum of its proper divisors (22365887).

58191681 is a wasteful number, since it uses less digits than its factorization.

58191681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672.

The product of its digits is 17280, while the sum is 39.

The square root of 58191681 is about 7628.3471997543. The cubic root of 58191681 is about 387.5136167258.

The spelling of 58191681 in words is "fifty-eight million, one hundred ninety-one thousand, six hundred eighty-one".