505091051 has 2 divisors, whose sum is σ = 505091052. Its totient is φ = 505091050.

The previous prime is 505091047. The next prime is 505091071. The reversal of 505091051 is 150190505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505091051 - 2² = 505091047 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 505091051.

It is not a weakly prime, because it can be changed into another prime (505091071) 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, 252545525 + 252545526.

It is an arithmetic number, because the mean of its divisors is an integer number (252545526).

Almost surely, 2^505091051 is an apocalyptic number.

505091051 is a deficient number, since it is larger than the sum of its proper divisors (1).

505091051 is an equidigital number, since it uses as much as digits as its factorization.

505091051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 505091051 is about 22474.2308210982. The cubic root of 505091051 is about 796.3852809192.

The spelling of 505091051 in words is "five hundred five million, ninety-one thousand, fifty-one".