65144503 has 2 divisors, whose sum is σ = 65144504. Its totient is φ = 65144502.

The previous prime is 65144477. The next prime is 65144507. The reversal of 65144503 is 30544156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65144503 - 2²⁵ = 31590071 is a prime.

It is a super-2 number, since 2×65144503² = 8487612542234018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65144507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32572251 + 32572252.

It is an arithmetic number, because the mean of its divisors is an integer number (32572252).

Almost surely, 2^65144503 is an apocalyptic number.

65144503 is a deficient number, since it is larger than the sum of its proper divisors (1).

65144503 is an equidigital number, since it uses as much as digits as its factorization.

65144503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65144503 is about 8071.2144687153. The cubic root of 65144503 is about 402.3703076103.

Adding to 65144503 its reverse (30544156), we get a palindrome (95688659).

It can be divided in two parts, 651 and 44503, that added together give a palindrome (45154).

The spelling of 65144503 in words is "sixty-five million, one hundred forty-four thousand, five hundred three".