65540503 has 4 divisors (see below), whose sum is σ = 74903440. Its totient is φ = 56177568.

The previous prime is 65540483. The next prime is 65540543. The reversal of 65540503 is 30504556.

65540503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65540503 - 2¹⁷ = 65409431 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 (65540543) 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, 4681458 + ... + 4681471.

It is an arithmetic number, because the mean of its divisors is an integer number (18725860).

Almost surely, 2^65540503 is an apocalyptic number.

65540503 is a deficient number, since it is larger than the sum of its proper divisors (9362937).

65540503 is an equidigital number, since it uses as much as digits as its factorization.

65540503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362936.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 65540503 is about 8095.7089251035. The cubic root of 65540503 is about 403.1839698442.

The spelling of 65540503 in words is "sixty-five million, five hundred forty thousand, five hundred three".