64501 has 4 divisors (see below), whose sum is σ = 65772. Its totient is φ = 63232.

The previous prime is 64499. The next prime is 64513. The reversal of 64501 is 10546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10546 = 2 ⋅5273.

It can be written as a sum of positive squares in 2 ways, for example, as 34225 + 30276 = 185^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 64501 - 2¹ = 64499 is a prime.

It is a Duffinian number.

64501 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (16443).

2⁶⁴⁵⁰¹ is an apocalyptic number.

It is an amenable number.

64501 is a deficient number, since it is larger than the sum of its proper divisors (1271).

64501 is a wasteful number, since it uses less digits than its factorization.

64501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 64501 is about 253.9704707245. The cubic root of 64501 is about 40.1041038248.

It can be divided in two parts, 64 and 501, that added together give a palindrome (565).

The spelling of 64501 in words is "sixty-four thousand, five hundred one".