5712020721 has 32 divisors (see below), whose sum is σ = 9632931840. Its totient is φ = 3311312400.

The previous prime is 5712020693. The next prime is 5712020729. The reversal of 5712020721 is 1270202175.

5712020721 is a `hidden beast` number, since 571 + 2 + 0 + 20 + 72 + 1 = 666.

It is not a de Polignac number, because 5712020721 - 2¹¹ = 5712018673 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5712020729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411265 + ... + 424926.

It is an arithmetic number, because the mean of its divisors is an integer number (301029120).

Almost surely, 2^5712020721 is an apocalyptic number.

It is an amenable number.

5712020721 is a deficient number, since it is larger than the sum of its proper divisors (3920911119).

5712020721 is a wasteful number, since it uses less digits than its factorization.

5712020721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836234 (or 836228 counting only the distinct ones).

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

The square root of 5712020721 is about 75577.9115945922. The cubic root of 5712020721 is about 1787.5708256677.

Adding to 5712020721 its reverse (1270202175), we get a palindrome (6982222896).

It can be divided in two parts, 57120 and 20721, that added together give a square (77841 = 279²).

The spelling of 5712020721 in words is "five billion, seven hundred twelve million, twenty thousand, seven hundred twenty-one".