561610050503 has 2 divisors, whose sum is σ = 561610050504. Its totient is φ = 561610050502.

The previous prime is 561610050497. The next prime is 561610050553. The reversal of 561610050503 is 305050016165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561610050503 - 2¹⁶ = 561609984967 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561610050503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561610050553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280805025251 + 280805025252.

It is an arithmetic number, because the mean of its divisors is an integer number (280805025252).

Almost surely, 2^561610050503 is an apocalyptic number.

561610050503 is a deficient number, since it is larger than the sum of its proper divisors (1).

561610050503 is an equidigital number, since it uses as much as digits as its factorization.

561610050503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

Adding to 561610050503 its reverse (305050016165), we get a palindrome (866660066668).

The spelling of 561610050503 in words is "five hundred sixty-one billion, six hundred ten million, fifty thousand, five hundred three".