4055381 has 8 divisors (see below), whose sum is σ = 4441824. Its totient is φ = 3671920.

The previous prime is 4055377. The next prime is 4055393. The reversal of 4055381 is 1835504.

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 4055381 - 2² = 4055377 is a prime.

It is a super-2 number, since 2×4055381² = 32892230110322, which contains 22 as substring.

It is an Ulam number.

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 4055381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4055321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2906 + ... + 4068.

It is an arithmetic number, because the mean of its divisors is an integer number (555228).

Almost surely, 2^4055381 is an apocalyptic number.

4055381 is the 1163-rd octagonal number.

It is an amenable number.

4055381 is a deficient number, since it is larger than the sum of its proper divisors (386443).

4055381 is a wasteful number, since it uses less digits than its factorization.

4055381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 4055381 is about 2013.7976561710. The cubic root of 4055381 is about 159.4693487745.

The spelling of 4055381 in words is "four million, fifty-five thousand, three hundred eighty-one".