64555 has 4 divisors (see below), whose sum is σ = 77472. Its totient is φ = 51640.

The previous prime is 64553. The next prime is 64567. The reversal of 64555 is 55546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55546 = 2 ⋅27773.

It is not a de Polignac number, because 64555 - 2¹ = 64553 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 4⁷ + 5⁶ + 5⁶ + 5⁶ .

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (64553) 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, 6451 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (19368).

2⁶⁴⁵⁵⁵ is an apocalyptic number.

64555 is a deficient number, since it is larger than the sum of its proper divisors (12917).

64555 is a wasteful number, since it uses less digits than its factorization.

64555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916.

The product of its digits is 3000, while the sum is 25.

The square root of 64555 is about 254.0767600549. The cubic root of 64555 is about 40.1152923724.

Subtracting from 64555 its reverse (55546), we obtain a palindrome (9009).

The spelling of 64555 in words is "sixty-four thousand, five hundred fifty-five".