505011893 has 2 divisors, whose sum is σ = 505011894. Its totient is φ = 505011892.

The previous prime is 505011869. The next prime is 505011937. The reversal of 505011893 is 398110505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459759364 + 45252529 = 21442^2 + 6727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505011893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505016893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252505946 + 252505947.

It is an arithmetic number, because the mean of its divisors is an integer number (252505947).

Almost surely, 2^505011893 is an apocalyptic number.

It is an amenable number.

505011893 is a deficient number, since it is larger than the sum of its proper divisors (1).

505011893 is an equidigital number, since it uses as much as digits as its factorization.

505011893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 505011893 is about 22472.4696684632. The cubic root of 505011893 is about 796.3436755100.

The spelling of 505011893 in words is "five hundred five million, eleven thousand, eight hundred ninety-three".