6255591 has 4 divisors (see below), whose sum is σ = 8340792. Its totient is φ = 4170392.

The previous prime is 6255581. The next prime is 6255607. The reversal of 6255591 is 1955526.

6255591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6255591 - 2⁶ = 6255527 is a prime.

It is a D-number.

6255591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6255581) 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 3 ways as a sum of consecutive naturals, for example, 1042596 + ... + 1042601.

It is an arithmetic number, because the mean of its divisors is an integer number (2085198).

Almost surely, 2^6255591 is an apocalyptic number.

6255591 is a deficient number, since it is larger than the sum of its proper divisors (2085201).

6255591 is a wasteful number, since it uses less digits than its factorization.

6255591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085200.

The product of its digits is 13500, while the sum is 33.

The square root of 6255591 is about 2501.1179500375. The cubic root of 6255591 is about 184.2564850154.

It can be divided in two parts, 625 and 5591, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 6255591 in words is "six million, two hundred fifty-five thousand, five hundred ninety-one".