381355 has 8 divisors (see below), whose sum is σ = 492912. Its totient is φ = 281568.

The previous prime is 381347. The next prime is 381371. The reversal of 381355 is 553183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381355 - 2³ = 381347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2869 + ... + 2998.

It is an arithmetic number, because the mean of its divisors is an integer number (61614).

2³⁸¹³⁵⁵ is an apocalyptic number.

381355 is a deficient number, since it is larger than the sum of its proper divisors (111557).

381355 is a wasteful number, since it uses less digits than its factorization.

381355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885.

The product of its digits is 1800, while the sum is 25.

The square root of 381355 is about 617.5394724226. The cubic root of 381355 is about 72.5175542115.

The spelling of 381355 in words is "three hundred eighty-one thousand, three hundred fifty-five".