381567 has 4 divisors (see below), whose sum is σ = 508760. Its totient is φ = 254376.

The previous prime is 381559. The next prime is 381569. The reversal of 381567 is 765183.

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

It is not a de Polignac number, because 381567 - 2³ = 381559 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381567.

It is not an unprimeable number, because it can be changed into a prime (381569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63592 + ... + 63597.

It is an arithmetic number, because the mean of its divisors is an integer number (127190).

2³⁸¹⁵⁶⁷ is an apocalyptic number.

381567 is a deficient number, since it is larger than the sum of its proper divisors (127193).

381567 is a wasteful number, since it uses less digits than its factorization.

381567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127192.

The product of its digits is 5040, while the sum is 30.

The square root of 381567 is about 617.7110975205. The cubic root of 381567 is about 72.5309895264.

The spelling of 381567 in words is "three hundred eighty-one thousand, five hundred sixty-seven".