505709051 has 2 divisors, whose sum is σ = 505709052. Its totient is φ = 505709050.

The previous prime is 505709003. The next prime is 505709053. The reversal of 505709051 is 150907505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505709051 is a prime.

Together with 505709053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 505708999 and 505709017.

It is not a weakly prime, because it can be changed into another prime (505709053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252854525 + 252854526.

It is an arithmetic number, because the mean of its divisors is an integer number (252854526).

Almost surely, 2^505709051 is an apocalyptic number.

505709051 is a deficient number, since it is larger than the sum of its proper divisors (1).

505709051 is an equidigital number, since it uses as much as digits as its factorization.

505709051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 32.

The square root of 505709051 is about 22487.9756981370. The cubic root of 505709051 is about 796.7099520918.

The spelling of 505709051 in words is "five hundred five million, seven hundred nine thousand, fifty-one".