65550503 has 2 divisors, whose sum is σ = 65550504. Its totient is φ = 65550502.

The previous prime is 65550497. The next prime is 65550557. The reversal of 65550503 is 30505556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65550503 - 2²⁴ = 48773287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65570503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32775251 + 32775252.

It is an arithmetic number, because the mean of its divisors is an integer number (32775252).

Almost surely, 2^65550503 is an apocalyptic number.

65550503 is a deficient number, since it is larger than the sum of its proper divisors (1).

65550503 is an equidigital number, since it uses as much as digits as its factorization.

65550503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 65550503 is about 8096.3265126846. The cubic root of 65550503 is about 403.2044743896.

The spelling of 65550503 in words is "sixty-five million, five hundred fifty thousand, five hundred three".