381975 has 24 divisors (see below), whose sum is σ = 690432. Its totient is φ = 184800.

The previous prime is 381949. The next prime is 381977. The reversal of 381975 is 579183.

381975 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 381975 - 2⁵ = 381943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

381975 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 594 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (28768).

2³⁸¹⁹⁷⁵ is an apocalyptic number.

381975 is a deficient number, since it is larger than the sum of its proper divisors (308457).

381975 is a wasteful number, since it uses less digits than its factorization.

381975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 482 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 381975 is about 618.0412607585. The cubic root of 381975 is about 72.5568321721.

The spelling of 381975 in words is "three hundred eighty-one thousand, nine hundred seventy-five".