500550551 has 2 divisors, whose sum is σ = 500550552. Its totient is φ = 500550550.

The previous prime is 500550529. The next prime is 500550569. The reversal of 500550551 is 155055005.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500550551 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 500550551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500550571) 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 as a sum of consecutive naturals, namely, 250275275 + 250275276.

It is an arithmetic number, because the mean of its divisors is an integer number (250275276).

Almost surely, 2^500550551 is an apocalyptic number.

500550551 is a deficient number, since it is larger than the sum of its proper divisors (1).

500550551 is an equidigital number, since it uses as much as digits as its factorization.

500550551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 500550551 is about 22372.9870826405. The cubic root of 500550551 is about 793.9917342058.

The spelling of 500550551 in words is "five hundred million, five hundred fifty thousand, five hundred fifty-one".