64545503 has 32 divisors (see below), whose sum is σ = 77137920. Its totient is φ = 53424000.

The previous prime is 64545497. The next prime is 64545511. The reversal of 64545503 is 30554546.

It is a cyclic number.

It is not a de Polignac number, because 64545503 - 2¹⁴ = 64529119 is a prime.

It is a super-2 number, since 2×64545503² = 8332243915046018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 64545503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603176 + ... + 603282.

It is an arithmetic number, because the mean of its divisors is an integer number (2410560).

Almost surely, 2^64545503 is an apocalyptic number.

64545503 is a deficient number, since it is larger than the sum of its proper divisors (12592417).

64545503 is a wasteful number, since it uses less digits than its factorization.

64545503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 64545503 is about 8034.0215956892. The cubic root of 64545503 is about 401.1332509072.

The spelling of 64545503 in words is "sixty-four million, five hundred forty-five thousand, five hundred three".