3138555 has 32 divisors (see below), whose sum is σ = 5833728. Its totient is φ = 1411200.

The previous prime is 3138547. The next prime is 3138559. The reversal of 3138555 is 5558313.

It is not a de Polignac number, because 3138555 - 2³ = 3138547 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7245 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (182304).

Almost surely, 2^3138555 is an apocalyptic number.

3138555 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3138555 is a deficient number, since it is larger than the sum of its proper divisors (2695173).

3138555 is a wasteful number, since it uses less digits than its factorization.

3138555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its digits is 9000, while the sum is 30.

The square root of 3138555 is about 1771.5967374095. The cubic root of 3138555 is about 146.4119689967.

The spelling of 3138555 in words is "three million, one hundred thirty-eight thousand, five hundred fifty-five".