60530721 has 4 divisors (see below), whose sum is σ = 80707632. Its totient is φ = 40353812.

The previous prime is 60530711. The next prime is 60530737. The reversal of 60530721 is 12703506.

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 a cyclic number.

It is not a de Polignac number, because 60530721 - 2⁷ = 60530593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 60530691 and 60530700.

It is not an unprimeable number, because it can be changed into a prime (60530711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10088451 + ... + 10088456.

It is an arithmetic number, because the mean of its divisors is an integer number (20176908).

Almost surely, 2^60530721 is an apocalyptic number.

It is an amenable number.

60530721 is a deficient number, since it is larger than the sum of its proper divisors (20176911).

60530721 is a wasteful number, since it uses less digits than its factorization.

60530721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20176910.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 60530721 is about 7780.1491630945. The cubic root of 60530721 is about 392.6376565585.

The spelling of 60530721 in words is "sixty million, five hundred thirty thousand, seven hundred twenty-one".