64555271 has 8 divisors (see below), whose sum is σ = 70541184. Its totient is φ = 58588920.

The previous prime is 64555241. The next prime is 64555291. The reversal of 64555271 is 17255546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64555271 - 2¹⁰ = 64554247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64555201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510 + ... + 11636.

It is an arithmetic number, because the mean of its divisors is an integer number (8817648).

Almost surely, 2^64555271 is an apocalyptic number.

64555271 is a deficient number, since it is larger than the sum of its proper divisors (5985913).

64555271 is a wasteful number, since it uses less digits than its factorization.

64555271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781.

The product of its digits is 42000, while the sum is 35.

The square root of 64555271 is about 8034.6294874126. The cubic root of 64555271 is about 401.1534850665.

The spelling of 64555271 in words is "sixty-four million, five hundred fifty-five thousand, two hundred seventy-one".