5321705781 has 12 divisors (see below), whose sum is σ = 8109775392. Its totient is φ = 3040783704.

The previous prime is 5321705761. The next prime is 5321705803. The reversal of 5321705781 is 1875071235.

It is not a de Polignac number, because 5321705781 - 2⁵ = 5321705749 is a prime.

It is a super-2 number, since 2×5321705781² = 56641104839057639922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321705731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326340 + ... + 342258.

It is an arithmetic number, because the mean of its divisors is an integer number (675814616).

Almost surely, 2^5321705781 is an apocalyptic number.

It is an amenable number.

5321705781 is a deficient number, since it is larger than the sum of its proper divisors (2788069611).

5321705781 is an frugal number, since it uses more digits than its factorization.

5321705781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31848 (or 15929 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 5321705781 is about 72950.0224880020. The cubic root of 5321705781 is about 1745.8903053128.

The spelling of 5321705781 in words is "five billion, three hundred twenty-one million, seven hundred five thousand, seven hundred eighty-one".