5721820215 has 16 divisors (see below), whose sum is σ = 9182086368. Its totient is φ = 3042579456.

The previous prime is 5721820211. The next prime is 5721820253. The reversal of 5721820215 is 5120281275.

It is not a de Polignac number, because 5721820215 - 2² = 5721820211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721820211) 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, 560902 + ... + 571011.

It is an arithmetic number, because the mean of its divisors is an integer number (573880398).

Almost surely, 2^5721820215 is an apocalyptic number.

5721820215 is a deficient number, since it is larger than the sum of its proper divisors (3460266153).

5721820215 is a wasteful number, since it uses less digits than its factorization.

5721820215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132258.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 5721820215 is about 75642.7142228516. The cubic root of 5721820215 is about 1788.5924887224.

The spelling of 5721820215 in words is "five billion, seven hundred twenty-one million, eight hundred twenty thousand, two hundred fifteen".