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381155 = 576231
BaseRepresentation
bin1011101000011100011
3201100211212
41131003203
544144110
612100335
73145145
oct1350343
9640755
10381155
11240405
121646ab
13104648
149cc95
1577e05
hex5d0e3

381155 has 4 divisors (see below), whose sum is σ = 457392. Its totient is φ = 304920.

The previous prime is 381103. The next prime is 381167. The reversal of 381155 is 551183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551183 = 796977.

It is not a de Polignac number, because 381155 - 210 = 380131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38111 + ... + 38120.

It is an arithmetic number, because the mean of its divisors is an integer number (114348).

2381155 is an apocalyptic number.

381155 is a deficient number, since it is larger than the sum of its proper divisors (76237).

381155 is an equidigital number, since it uses as much as digits as its factorization.

381155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76236.

The product of its digits is 600, while the sum is 23.

The square root of 381155 is about 617.3775182172. The cubic root of 381155 is about 72.5048748208.

The spelling of 381155 in words is "three hundred eighty-one thousand, one hundred fifty-five".

Divisors: 1 5 76231 381155