2617205755 has 4 divisors (see below), whose sum is σ = 3140646912. Its totient is φ = 2093764600.

The previous prime is 2617205753. The next prime is 2617205821. The reversal of 2617205755 is 5575027162.

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

It is not a de Polignac number, because 2617205755 - 2¹ = 2617205753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2617205753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261720571 + ... + 261720580.

It is an arithmetic number, because the mean of its divisors is an integer number (785161728).

Almost surely, 2^2617205755 is an apocalyptic number.

2617205755 is a deficient number, since it is larger than the sum of its proper divisors (523441157).

2617205755 is an equidigital number, since it uses as much as digits as its factorization.

2617205755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523441156.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 2617205755 is about 51158.6332401482. The cubic root of 2617205755 is about 1378.0954183897.

The spelling of 2617205755 in words is "two billion, six hundred seventeen million, two hundred five thousand, seven hundred fifty-five".