6155540 has 24 divisors (see below), whose sum is σ = 13373640. Its totient is φ = 2377088.

The previous prime is 6155537. The next prime is 6155549. The reversal of 6155540 is 455516.

It can be written as a sum of positive squares in 4 ways, for example, as 2598544 + 3556996 = 1612^2 + 1886^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6155549) 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, 4727 + ... + 5886.

It is an arithmetic number, because the mean of its divisors is an integer number (557235).

Almost surely, 2^6155540 is an apocalyptic number.

It is an amenable number.

6155540 is an abundant number, since it is smaller than the sum of its proper divisors (7218100).

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

6155540 is a wasteful number, since it uses less digits than its factorization.

6155540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651 (or 10649 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 6155540 is about 2481.0360739014. The cubic root of 6155540 is about 183.2688772494.

The spelling of 6155540 in words is "six million, one hundred fifty-five thousand, five hundred forty".