381541 has 2 divisors, whose sum is σ = 381542. Its totient is φ = 381540.

The previous prime is 381533. The next prime is 381559. The reversal of 381541 is 145183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229441 + 152100 = 479^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 381541 - 2³ = 381533 is a prime.

381541 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190770 + 190771.

It is an arithmetic number, because the mean of its divisors is an integer number (190771).

2³⁸¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

381541 is a deficient number, since it is larger than the sum of its proper divisors (1).

381541 is an equidigital number, since it uses as much as digits as its factorization.

381541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 381541 is about 617.6900517250. The cubic root of 381541 is about 72.5293420668.

The spelling of 381541 in words is "three hundred eighty-one thousand, five hundred forty-one".