5853397721 has 4 divisors (see below), whose sum is σ = 6197715252. Its totient is φ = 5509080192.

The previous prime is 5853397699. The next prime is 5853397727. The reversal of 5853397721 is 1277933585.

5853397721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1277933585 = 5 ⋅255586717.

It can be written as a sum of positive squares in 2 ways, for example, as 3849582025 + 2003815696 = 62045^2 + 44764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5853397721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5853397721.

It is not an unprimeable number, because it can be changed into a prime (5853397727) 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, 172158740 + ... + 172158773.

It is an arithmetic number, because the mean of its divisors is an integer number (1549428813).

Almost surely, 2^5853397721 is an apocalyptic number.

It is an amenable number.

5853397721 is a deficient number, since it is larger than the sum of its proper divisors (344317531).

5853397721 is a wasteful number, since it uses less digits than its factorization.

5853397721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344317530.

The product of its digits is 1587600, while the sum is 50.

The square root of 5853397721 is about 76507.5010766918. The cubic root of 5853397721 is about 1802.1987247594.

The spelling of 5853397721 in words is "five billion, eight hundred fifty-three million, three hundred ninety-seven thousand, seven hundred twenty-one".