58978721 has 16 divisors (see below), whose sum is σ = 62596800. Its totient is φ = 55489728.

The previous prime is 58978697. The next prime is 58978753. The reversal of 58978721 is 12787985.

58978721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 58978721 - 2⁶ = 58978657 is a prime.

It is a Duffinian number.

Its product of digits (282240) is a multiple of the sum of its prime divisors (448).

It is not an unprimeable number, because it can be changed into a prime (58978781) 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 15 ways as a sum of consecutive naturals, for example, 257435 + ... + 257663.

It is an arithmetic number, because the mean of its divisors is an integer number (3912300).

Almost surely, 2^58978721 is an apocalyptic number.

It is an amenable number.

58978721 is a deficient number, since it is larger than the sum of its proper divisors (3618079).

58978721 is a wasteful number, since it uses less digits than its factorization.

58978721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its digits is 282240, while the sum is 47.

The square root of 58978721 is about 7679.7604780358. The cubic root of 58978721 is about 389.2528342248.

The spelling of 58978721 in words is "fifty-eight million, nine hundred seventy-eight thousand, seven hundred twenty-one".