3881555 has 8 divisors (see below), whose sum is σ = 4703712. Its totient is φ = 3074688.

The previous prime is 3881543. The next prime is 3881573. The reversal of 3881555 is 5551883.

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 3881555 - 2⁸ = 3881299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3254 + ... + 4283.

It is an arithmetic number, because the mean of its divisors is an integer number (587964).

Almost surely, 2^3881555 is an apocalyptic number.

3881555 is a deficient number, since it is larger than the sum of its proper divisors (822157).

3881555 is a wasteful number, since it uses less digits than its factorization.

3881555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645.

The product of its digits is 24000, while the sum is 35.

The square root of 3881555 is about 1970.1662366410. The cubic root of 3881555 is about 157.1575493937.

The spelling of 3881555 in words is "three million, eight hundred eighty-one thousand, five hundred fifty-five".