5220701721 has 16 divisors (see below), whose sum is σ = 7735900800. Its totient is φ = 3479780304.

The previous prime is 5220701719. The next prime is 5220701737. The reversal of 5220701721 is 1271070225.

5220701721 is a `hidden beast` number, since 522 + 0 + 70 + 1 + 72 + 1 = 666.

It is not a de Polignac number, because 5220701721 - 2¹ = 5220701719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5220701741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146095 + ... + 178283.

It is an arithmetic number, because the mean of its divisors is an integer number (483493800).

Almost surely, 2^5220701721 is an apocalyptic number.

It is an amenable number.

5220701721 is a deficient number, since it is larger than the sum of its proper divisors (2515199079).

5220701721 is a wasteful number, since it uses less digits than its factorization.

5220701721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38205 (or 38199 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 5220701721 is about 72254.4235393239. The cubic root of 5220701721 is about 1734.7742229330.

Adding to 5220701721 its reverse (1271070225), we get a palindrome (6491771946).

The spelling of 5220701721 in words is "five billion, two hundred twenty million, seven hundred one thousand, seven hundred twenty-one".