655616171 has 4 divisors (see below), whose sum is σ = 749275632. Its totient is φ = 561956712.

The previous prime is 655616167. The next prime is 655616183. The reversal of 655616171 is 171616556.

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 655616171 - 2² = 655616167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655616161) 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, 46829720 + ... + 46829733.

It is an arithmetic number, because the mean of its divisors is an integer number (187318908).

Almost surely, 2^655616171 is an apocalyptic number.

655616171 is a deficient number, since it is larger than the sum of its proper divisors (93659461).

655616171 is an equidigital number, since it uses as much as digits as its factorization.

655616171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93659460.

The product of its digits is 37800, while the sum is 38.

The square root of 655616171 is about 25605.0028510055. The cubic root of 655616171 is about 868.7267988490.

The spelling of 655616171 in words is "six hundred fifty-five million, six hundred sixteen thousand, one hundred seventy-one".