6505155 has 24 divisors (see below), whose sum is σ = 11583312. Its totient is φ = 3374784.

The previous prime is 6505153. The next prime is 6505181. The reversal of 6505155 is 5515056.

6505155 is a `hidden beast` number, since 6 + 505 + 155 = 666.

It is not a de Polignac number, because 6505155 - 2¹ = 6505153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6505153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289 + ... + 3618.

It is an arithmetic number, because the mean of its divisors is an integer number (482638).

Almost surely, 2^6505155 is an apocalyptic number.

6505155 is a deficient number, since it is larger than the sum of its proper divisors (5078157).

6505155 is a wasteful number, since it uses less digits than its factorization.

6505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955 (or 3952 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 6505155 is about 2550.5205351065. The cubic root of 6505155 is about 186.6748809452.

Subtracting from 6505155 its reverse (5515056), we obtain a palindrome (990099).

The spelling of 6505155 in words is "six million, five hundred five thousand, one hundred fifty-five".