6155556 has 24 divisors (see below), whose sum is σ = 15669024. Its totient is φ = 1865280.

The previous prime is 6155551. The next prime is 6155561. The reversal of 6155556 is 6555516.

It is an interprime number because it is at equal distance from previous prime (6155551) and next prime (6155561).

It is a super-4 number, since 4×6155556⁴ (a number of 28 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (6155551) 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, 23185 + ... + 23448.

It is an arithmetic number, because the mean of its divisors is an integer number (652876).

Almost surely, 2^6155556 is an apocalyptic number.

6155556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6155556 is an abundant number, since it is smaller than the sum of its proper divisors (9513468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6155556 is a wasteful number, since it uses less digits than its factorization.

6155556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46651 (or 46649 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The square root of 6155556 is about 2481.0392983587. The cubic root of 6155556 is about 183.2690360386.

The spelling of 6155556 in words is "six million, one hundred fifty-five thousand, five hundred fifty-six".