381053 has 4 divisors (see below), whose sum is σ = 385728. Its totient is φ = 376380.

The previous prime is 381047. The next prime is 381061. The reversal of 381053 is 350183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350183 = 17 ⋅20599.

It is a cyclic number.

It is not a de Polignac number, because 381053 - 2⁴ = 381037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2213 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (96432).

2³⁸¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

381053 is a deficient number, since it is larger than the sum of its proper divisors (4675).

381053 is an equidigital number, since it uses as much as digits as its factorization.

381053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 381053 is about 617.2949052114. The cubic root of 381053 is about 72.4984066237.

It can be divided in two parts, 3810 and 53, that multiplied together give a triangular number (201930 = T₆₃₅).

The spelling of 381053 in words is "three hundred eighty-one thousand, fifty-three".