6171955 has 4 divisors (see below), whose sum is σ = 7406352. Its totient is φ = 4937560.

The previous prime is 6171953. The next prime is 6171967. The reversal of 6171955 is 5591716.

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

It is not a de Polignac number, because 6171955 - 2¹ = 6171953 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 6171955.

It is not an unprimeable number, because it can be changed into a prime (6171953) 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 3 ways as a sum of consecutive naturals, for example, 617191 + ... + 617200.

It is an arithmetic number, because the mean of its divisors is an integer number (1851588).

Almost surely, 2^6171955 is an apocalyptic number.

6171955 is a deficient number, since it is larger than the sum of its proper divisors (1234397).

6171955 is a wasteful number, since it uses less digits than its factorization.

6171955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234396.

The product of its digits is 9450, while the sum is 34.

The square root of 6171955 is about 2484.3419651892. The cubic root of 6171955 is about 183.4316405727.

The spelling of 6171955 in words is "six million, one hundred seventy-one thousand, nine hundred fifty-five".