381559 has 2 divisors, whose sum is σ = 381560. Its totient is φ = 381558.

The previous prime is 381541. The next prime is 381569. The reversal of 381559 is 955183.

It is a strong prime.

It is an emirp because it is prime and its reverse (955183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381559 - 2⁵ = 381527 is a prime.

381559 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 381559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190779 + 190780.

It is an arithmetic number, because the mean of its divisors is an integer number (190780).

2³⁸¹⁵⁵⁹ is an apocalyptic number.

381559 is a deficient number, since it is larger than the sum of its proper divisors (1).

381559 is an equidigital number, since it uses as much as digits as its factorization.

381559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 381559 is about 617.7046219675. The cubic root of 381559 is about 72.5304826237.

The spelling of 381559 in words is "three hundred eighty-one thousand, five hundred fifty-nine".