5972651821 has 6 divisors (see below), whose sum is σ = 5999908110. Its totient is φ = 5945405976.

The previous prime is 5972651813. The next prime is 5972651873. The reversal of 5972651821 is 1281562795.

It can be written as a sum of positive squares in only one way, i.e., 5868326025 + 104325796 = 76605^2 + 10214^2 .

It is not a de Polignac number, because 5972651821 - 2³ = 5972651813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5972651801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1166950 + ... + 1172056.

It is an arithmetic number, because the mean of its divisors is an integer number (999984685).

Almost surely, 2^5972651821 is an apocalyptic number.

It is an amenable number.

5972651821 is a deficient number, since it is larger than the sum of its proper divisors (27256289).

5972651821 is an frugal number, since it uses more digits than its factorization.

5972651821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443 (or 5336 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 5972651821 is about 77282.9335688029. The cubic root of 5972651821 is about 1814.3555575718.

The spelling of 5972651821 in words is "five billion, nine hundred seventy-two million, six hundred fifty-one thousand, eight hundred twenty-one".