381601 has 8 divisors (see below), whose sum is σ = 421344. Its totient is φ = 342720.

The previous prime is 381569. The next prime is 381607. The reversal of 381601 is 106183.

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 381601 - 2⁵ = 381569 is a prime.

381601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (381607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (52668).

2³⁸¹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

381601 is a deficient number, since it is larger than the sum of its proper divisors (39743).

381601 is a wasteful number, since it uses less digits than its factorization.

381601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 381601 is about 617.7386178636. The cubic root of 381601 is about 72.5331437836.

Adding to 381601 its reverse (106183), we get a palindrome (487784).

The spelling of 381601 in words is "three hundred eighty-one thousand, six hundred one".