58430721 has 4 divisors (see below), whose sum is σ = 77907632. Its totient is φ = 38953812.

The previous prime is 58430707. The next prime is 58430731. The reversal of 58430721 is 12703485.

58430721 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 58430721 - 2⁵ = 58430689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58430731) 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, 9738451 + ... + 9738456.

It is an arithmetic number, because the mean of its divisors is an integer number (19476908).

Almost surely, 2^58430721 is an apocalyptic number.

It is an amenable number.

58430721 is a deficient number, since it is larger than the sum of its proper divisors (19476911).

58430721 is a wasteful number, since it uses less digits than its factorization.

58430721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19476910.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 58430721 is about 7643.9990188382. Note that the first 3 decimals coincide. The cubic root of 58430721 is about 388.0435017828.

The spelling of 58430721 in words is "fifty-eight million, four hundred thirty thousand, seven hundred twenty-one".