5917377821 has 4 divisors (see below), whose sum is σ = 5917688700. Its totient is φ = 5917066944.

The previous prime is 5917377769. The next prime is 5917377827. The reversal of 5917377821 is 1287737195.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1287737195 = 5 ⋅257547439.

It can be written as a sum of positive squares in 2 ways, for example, as 4495032025 + 1422345796 = 67045^2 + 37714^2 .

It is a cyclic number.

It is not a de Polignac number, because 5917377821 - 2²² = 5913183517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5917377821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5917377827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124886 + ... + 165623.

It is an arithmetic number, because the mean of its divisors is an integer number (1479422175).

Almost surely, 2^5917377821 is an apocalyptic number.

It is an amenable number.

5917377821 is a deficient number, since it is larger than the sum of its proper divisors (310879).

5917377821 is a wasteful number, since it uses less digits than its factorization.

5917377821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310878.

The product of its digits is 740880, while the sum is 50.

The square root of 5917377821 is about 76924.4942849805. The cubic root of 5917377821 is about 1808.7412084343.

The spelling of 5917377821 in words is "five billion, nine hundred seventeen million, three hundred seventy-seven thousand, eight hundred twenty-one".