381583 has 4 divisors (see below), whose sum is σ = 384088. Its totient is φ = 379080.

The previous prime is 381569. The next prime is 381607. The reversal of 381583 is 385183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 385183 = 67 ⋅5749.

It is a cyclic number.

It is not a de Polignac number, because 381583 - 2⁹ = 381071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381523) 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, 1008 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (96022).

2³⁸¹⁵⁸³ is an apocalyptic number.

381583 is a deficient number, since it is larger than the sum of its proper divisors (2505).

381583 is a wasteful number, since it uses less digits than its factorization.

381583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 2880, while the sum is 28.

The square root of 381583 is about 617.7240484229. The cubic root of 381583 is about 72.5320033104.

Subtracting 381583 from its reverse (385183), we obtain a square (3600 = 60²).

The spelling of 381583 in words is "three hundred eighty-one thousand, five hundred eighty-three".