52438381 has 4 divisors (see below), whose sum is σ = 52468252. Its totient is φ = 52408512.

The previous prime is 52438357. The next prime is 52438403. The reversal of 52438381 is 18383425.

It is a happy number.

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 23912100 + 28526281 = 4890^2 + 5341^2 .

It is a cyclic number.

It is not a de Polignac number, because 52438381 - 2¹⁷ = 52307309 is a prime.

It is a super-2 number, since 2×52438381² = 5499567603802322, 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 (52438301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12126 + ... + 15871.

It is an arithmetic number, because the mean of its divisors is an integer number (13117063).

Almost surely, 2^52438381 is an apocalyptic number.

It is an amenable number.

52438381 is a deficient number, since it is larger than the sum of its proper divisors (29871).

52438381 is a wasteful number, since it uses less digits than its factorization.

52438381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29870.

The product of its digits is 23040, while the sum is 34.

The square root of 52438381 is about 7241.4350097201. The cubic root of 52438381 is about 374.2970677793.

The spelling of 52438381 in words is "fifty-two million, four hundred thirty-eight thousand, three hundred eighty-one".