5721523349 has 4 divisors (see below), whose sum is σ = 6058083564. Its totient is φ = 5384963136.

The previous prime is 5721523319. The next prime is 5721523387. The reversal of 5721523349 is 9433251275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2099289124 + 3622234225 = 45818^2 + 60185^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721523349 - 2¹² = 5721519253 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 (5721523319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168280082 + ... + 168280115.

It is an arithmetic number, because the mean of its divisors is an integer number (1514520891).

Almost surely, 2^5721523349 is an apocalyptic number.

It is an amenable number.

5721523349 is a deficient number, since it is larger than the sum of its proper divisors (336560215).

5721523349 is a wasteful number, since it uses less digits than its factorization.

5721523349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336560214.

The product of its digits is 226800, while the sum is 41.

The square root of 5721523349 is about 75640.7519066277. The cubic root of 5721523349 is about 1788.5615555891.

The spelling of 5721523349 in words is "five billion, seven hundred twenty-one million, five hundred twenty-three thousand, three hundred forty-nine".