550530503 has 2 divisors, whose sum is σ = 550530504. Its totient is φ = 550530502.

The previous prime is 550530481. The next prime is 550530583. The reversal of 550530503 is 305035055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550530503 - 2¹² = 550526407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550530583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275265251 + 275265252.

It is an arithmetic number, because the mean of its divisors is an integer number (275265252).

Almost surely, 2^550530503 is an apocalyptic number.

550530503 is a deficient number, since it is larger than the sum of its proper divisors (1).

550530503 is an equidigital number, since it uses as much as digits as its factorization.

550530503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 550530503 is about 23463.3864350396. The cubic root of 550530503 is about 819.5846116423.

Adding to 550530503 its reverse (305035055), we get a palindrome (855565558).

The spelling of 550530503 in words is "five hundred fifty million, five hundred thirty thousand, five hundred three".