64255171 has 4 divisors (see below), whose sum is σ = 64278792. Its totient is φ = 64231552.

The previous prime is 64255153. The next prime is 64255183. The reversal of 64255171 is 17155246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17155246 = 2 ⋅8577623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64255171 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64255151) 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, 7105 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (16069698).

Almost surely, 2^64255171 is an apocalyptic number.

64255171 is a deficient number, since it is larger than the sum of its proper divisors (23621).

64255171 is a wasteful number, since it uses less digits than its factorization.

64255171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23620.

The product of its digits is 8400, while the sum is 31.

The square root of 64255171 is about 8015.9323225686. The cubic root of 64255171 is about 400.5309012978.

The spelling of 64255171 in words is "sixty-four million, two hundred fifty-five thousand, one hundred seventy-one".