5318381 has 4 divisors (see below), whose sum is σ = 5325852. Its totient is φ = 5310912.

The previous prime is 5318363. The next prime is 5318431. The reversal of 5318381 is 1838135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1136356 + 4182025 = 1066^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 5318381 - 2⁶ = 5318317 is a prime.

It is a super-2 number, since 2×5318381² = 56570352922322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5318311) 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, 2540 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (1331463).

Almost surely, 2^5318381 is an apocalyptic number.

It is an amenable number.

5318381 is a deficient number, since it is larger than the sum of its proper divisors (7471).

5318381 is an equidigital number, since it uses as much as digits as its factorization.

5318381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470.

The product of its digits is 2880, while the sum is 29.

The square root of 5318381 is about 2306.1615294684. The cubic root of 5318381 is about 174.5526642957.

The spelling of 5318381 in words is "five million, three hundred eighteen thousand, three hundred eighty-one".