500551123 has 2 divisors, whose sum is σ = 500551124. Its totient is φ = 500551122.

The previous prime is 500551099. The next prime is 500551151. The reversal of 500551123 is 321155005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 500551123 - 2⁵ = 500551091 is a prime.

It is a super-2 number, since 2×500551123² = 501102853473122258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 500551094 and 500551103.

It is not a weakly prime, because it can be changed into another prime (500552123) 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, 250275561 + 250275562.

It is an arithmetic number, because the mean of its divisors is an integer number (250275562).

Almost surely, 2^500551123 is an apocalyptic number.

500551123 is a deficient number, since it is larger than the sum of its proper divisors (1).

500551123 is an equidigital number, since it uses as much as digits as its factorization.

500551123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 500551123 is about 22372.9998659098. Note that the first 3 decimals coincide. The cubic root of 500551123 is about 793.9920366482.

The spelling of 500551123 in words is "five hundred million, five hundred fifty-one thousand, one hundred twenty-three".