505745741 has 2 divisors, whose sum is σ = 505745742. Its totient is φ = 505745740.

The previous prime is 505745731. The next prime is 505745771. The reversal of 505745741 is 147547505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392238025 + 113507716 = 19805^2 + 10654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505745741 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 505745695 and 505745704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505745731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252872870 + 252872871.

It is an arithmetic number, because the mean of its divisors is an integer number (252872871).

Almost surely, 2^505745741 is an apocalyptic number.

It is an amenable number.

505745741 is a deficient number, since it is larger than the sum of its proper divisors (1).

505745741 is an equidigital number, since it uses as much as digits as its factorization.

505745741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 505745741 is about 22488.7914526326. The cubic root of 505745741 is about 796.7292191527.

The spelling of 505745741 in words is "five hundred five million, seven hundred forty-five thousand, seven hundred forty-one".