503345761 has 2 divisors, whose sum is σ = 503345762. Its totient is φ = 503345760.

The previous prime is 503345723. The next prime is 503345771. The reversal of 503345761 is 167543305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341547361 + 161798400 = 18481^2 + 12720^2 .

It is a cyclic number.

It is not a de Polignac number, because 503345761 - 2¹¹ = 503343713 is a prime.

It is not a weakly prime, because it can be changed into another prime (503345771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251672880 + 251672881.

It is an arithmetic number, because the mean of its divisors is an integer number (251672881).

Almost surely, 2^503345761 is an apocalyptic number.

It is an amenable number.

503345761 is a deficient number, since it is larger than the sum of its proper divisors (1).

503345761 is an equidigital number, since it uses as much as digits as its factorization.

503345761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 503345761 is about 22435.3685282859. The cubic root of 503345761 is about 795.4669466528.

The spelling of 503345761 in words is "five hundred three million, three hundred forty-five thousand, seven hundred sixty-one".