530741721 has 16 divisors (see below), whose sum is σ = 745334784. Its totient is φ = 335276304.

The previous prime is 530741707. The next prime is 530741741. The reversal of 530741721 is 127147035.

It is not a de Polignac number, because 530741721 - 2⁵ = 530741689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (530741741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28561 + ... + 43326.

It is an arithmetic number, because the mean of its divisors is an integer number (46583424).

Almost surely, 2^530741721 is an apocalyptic number.

It is an amenable number.

530741721 is a deficient number, since it is larger than the sum of its proper divisors (214593063).

530741721 is a wasteful number, since it uses less digits than its factorization.

530741721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72020.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 530741721 is about 23037.8323850140. The cubic root of 530741721 is about 809.6445735243.

Adding to 530741721 its reverse (127147035), we get a palindrome (657888756).

The spelling of 530741721 in words is "five hundred thirty million, seven hundred forty-one thousand, seven hundred twenty-one".