500000551 has 2 divisors, whose sum is σ = 500000552. Its totient is φ = 500000550.

The previous prime is 500000539. The next prime is 500000587. The reversal of 500000551 is 155000005.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500000551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500000951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250000275 + 250000276.

It is an arithmetic number, because the mean of its divisors is an integer number (250000276).

Almost surely, 2^500000551 is an apocalyptic number.

500000551 is a deficient number, since it is larger than the sum of its proper divisors (1).

500000551 is an equidigital number, since it uses as much as digits as its factorization.

500000551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 500000551 is about 22360.6920957291. The cubic root of 500000551 is about 793.7008175367.

Adding to 500000551 its reverse (155000005), we get a palindrome (655000556).

The spelling of 500000551 in words is "five hundred million, five hundred fifty-one", and thus it is an aban number.