58951991 has 4 divisors (see below), whose sum is σ = 67373712. Its totient is φ = 50530272.

The previous prime is 58951969. The next prime is 58952009. The reversal of 58951991 is 19915985.

58951991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19915985 = 5 ⋅3983197.

It is a cyclic number.

It is not a de Polignac number, because 58951991 - 2¹⁰ = 58950967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58951901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4210850 + ... + 4210863.

It is an arithmetic number, because the mean of its divisors is an integer number (16843428).

Almost surely, 2^58951991 is an apocalyptic number.

58951991 is a deficient number, since it is larger than the sum of its proper divisors (8421721).

58951991 is an equidigital number, since it uses as much as digits as its factorization.

58951991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421720.

The product of its digits is 145800, while the sum is 47.

The square root of 58951991 is about 7678.0199921594. The cubic root of 58951991 is about 389.1940203547.

The spelling of 58951991 in words is "fifty-eight million, nine hundred fifty-one thousand, nine hundred ninety-one".