5721219437 has 16 divisors (see below), whose sum is σ = 5870804208. Its totient is φ = 5573836800.

The previous prime is 5721219397. The next prime is 5721219451. The reversal of 5721219437 is 7349121275.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 841638121 + 4879581316 = 29011^2 + 69854^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721219437 - 2¹² = 5721215341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5721219394 and 5721219403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721219137) 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, 4961453 + ... + 4962605.

It is an arithmetic number, because the mean of its divisors is an integer number (366925263).

Almost surely, 2^5721219437 is an apocalyptic number.

It is an amenable number.

5721219437 is a deficient number, since it is larger than the sum of its proper divisors (149584771).

5721219437 is a wasteful number, since it uses less digits than its factorization.

5721219437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its digits is 105840, while the sum is 41.

The square root of 5721219437 is about 75638.7429628494. The cubic root of 5721219437 is about 1788.5298871615.

The spelling of 5721219437 in words is "five billion, seven hundred twenty-one million, two hundred nineteen thousand, four hundred thirty-seven".