65531003 has 4 divisors (see below), whose sum is σ = 65825088. Its totient is φ = 65236920.

The previous prime is 65530999. The next prime is 65531023. The reversal of 65531003 is 30013556.

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 65531003 - 2² = 65530999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65531003.

It is not an unprimeable number, because it can be changed into a prime (65531023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146708 + ... + 147153.

It is an arithmetic number, because the mean of its divisors is an integer number (16456272).

Almost surely, 2^65531003 is an apocalyptic number.

65531003 is a deficient number, since it is larger than the sum of its proper divisors (294085).

65531003 is a wasteful number, since it uses less digits than its factorization.

65531003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294084.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 65531003 is about 8095.1221732596. The cubic root of 65531003 is about 403.1644885941.

Adding to 65531003 its reverse (30013556), we get a palindrome (95544559).

The spelling of 65531003 in words is "sixty-five million, five hundred thirty-one thousand, three".