5323015681 has 3 divisors (see below), whose sum is σ = 5323088641. Its totient is φ = 5322942722.

The previous prime is 5323015669. The next prime is 5323015717. The reversal of 5323015681 is 1865103235.

The square root of 5323015681 is 72959.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 5323015681 - 2²⁵ = 5289461249 is a prime.

It is a super-2 number, since 2×5323015681² = 56668991880343787522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5323015631) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 36480 + ... + 109438.

Almost surely, 2^5323015681 is an apocalyptic number.

5323015681 is the 72959-th square number.

5323015681 is the 36480-th centered octagonal number.

It is an amenable number.

5323015681 is a deficient number, since it is larger than the sum of its proper divisors (72960).

5323015681 is an frugal number, since it uses more digits than its factorization.

5323015681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145918 (or 72959 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The cubic root of 5323015681 is about 1746.0335397187.

The spelling of 5323015681 in words is "five billion, three hundred twenty-three million, fifteen thousand, six hundred eighty-one".