508381 has 4 divisors (see below), whose sum is σ = 512512. Its totient is φ = 504252.

The previous prime is 508373. The next prime is 508393. The reversal of 508381 is 183805.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183805 = 5 ⋅36761.

It is a cyclic number.

It is not a de Polignac number, because 508381 - 2³ = 508373 is a prime.

It is a super-2 number, since 2×508381² = 516902482322, 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 (508301) 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, 1875 + ... + 2128.

It is an arithmetic number, because the mean of its divisors is an integer number (128128).

2⁵⁰⁸³⁸¹ is an apocalyptic number.

It is an amenable number.

508381 is a deficient number, since it is larger than the sum of its proper divisors (4131).

508381 is a wasteful number, since it uses less digits than its factorization.

508381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 508381 is about 713.0084150976. The cubic root of 508381 is about 79.8110645604.

The spelling of 508381 in words is "five hundred eight thousand, three hundred eighty-one".