6213155 has 16 divisors (see below), whose sum is σ = 8166144. Its totient is φ = 4510080.

The previous prime is 6213149. The next prime is 6213157. The reversal of 6213155 is 5513126.

It is not a de Polignac number, because 6213155 - 2⁶ = 6213091 is a prime.

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 6213155.

It is not an unprimeable number, because it can be changed into a prime (6213157) 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 15 ways as a sum of consecutive naturals, for example, 3182 + ... + 4748.

It is an arithmetic number, because the mean of its divisors is an integer number (510384).

Almost surely, 2^6213155 is an apocalyptic number.

6213155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6213155 is a deficient number, since it is larger than the sum of its proper divisors (1952989).

6213155 is a wasteful number, since it uses less digits than its factorization.

6213155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646.

The product of its digits is 900, while the sum is 23.

The square root of 6213155 is about 2492.6201074372. The cubic root of 6213155 is about 183.8388929264.

The spelling of 6213155 in words is "six million, two hundred thirteen thousand, one hundred fifty-five".