5393681 has 8 divisors (see below), whose sum is σ = 5673000. Its totient is φ = 5120640.

The previous prime is 5393677. The next prime is 5393693. The reversal of 5393681 is 1863935.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 5313025 = 284^2 + 2305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5393681 - 2² = 5393677 is a prime.

It is a super-2 number, since 2×5393681² = 58183589459522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5393581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 3293.

It is an arithmetic number, because the mean of its divisors is an integer number (709125).

Almost surely, 2^5393681 is an apocalyptic number.

It is an amenable number.

5393681 is a deficient number, since it is larger than the sum of its proper divisors (279319).

5393681 is a wasteful number, since it uses less digits than its factorization.

5393681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139.

The product of its digits is 19440, while the sum is 35.

The square root of 5393681 is about 2322.4299774159. The cubic root of 5393681 is about 175.3726047376.

The spelling of 5393681 in words is "five million, three hundred ninety-three thousand, six hundred eighty-one".