58147921 has 4 divisors (see below), whose sum is σ = 62620852. Its totient is φ = 53674992.

The previous prime is 58147913. The next prime is 58147927. The reversal of 58147921 is 12974185.

58147921 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7096896 + 51051025 = 2664^2 + 7145^2 .

It is a cyclic number.

It is not a de Polignac number, because 58147921 - 2³ = 58147913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58147927) 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, 2236446 + ... + 2236471.

It is an arithmetic number, because the mean of its divisors is an integer number (15655213).

Almost surely, 2^58147921 is an apocalyptic number.

It is an amenable number.

58147921 is a deficient number, since it is larger than the sum of its proper divisors (4472931).

58147921 is a wasteful number, since it uses less digits than its factorization.

58147921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472930.

The product of its digits is 20160, while the sum is 37.

The square root of 58147921 is about 7625.4784112212. The cubic root of 58147921 is about 387.4164559401.

The spelling of 58147921 in words is "fifty-eight million, one hundred forty-seven thousand, nine hundred twenty-one".