655171071 has 4 divisors (see below), whose sum is σ = 873561432. Its totient is φ = 436780712.

The previous prime is 655171039. The next prime is 655171073. The reversal of 655171071 is 170171556.

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 655171071 - 2⁵ = 655171039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655171073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109195176 + ... + 109195181.

It is an arithmetic number, because the mean of its divisors is an integer number (218390358).

Almost surely, 2^655171071 is an apocalyptic number.

655171071 is a deficient number, since it is larger than the sum of its proper divisors (218390361).

655171071 is a wasteful number, since it uses less digits than its factorization.

655171071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218390360.

The product of its (nonzero) digits is 7350, while the sum is 33.

The square root of 655171071 is about 25596.3097144881. The cubic root of 655171071 is about 868.5301605047.

The spelling of 655171071 in words is "six hundred fifty-five million, one hundred seventy-one thousand, seventy-one".