506557783 has 2 divisors, whose sum is σ = 506557784. Its totient is φ = 506557782.

The previous prime is 506557769. The next prime is 506557813. The reversal of 506557783 is 387755605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506557783 - 2¹³ = 506549591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506507783) 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, 253278891 + 253278892.

It is an arithmetic number, because the mean of its divisors is an integer number (253278892).

Almost surely, 2^506557783 is an apocalyptic number.

506557783 is a deficient number, since it is larger than the sum of its proper divisors (1).

506557783 is an equidigital number, since it uses as much as digits as its factorization.

506557783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882000, while the sum is 46.

The square root of 506557783 is about 22506.8385829730. The cubic root of 506557783 is about 797.1554093475.

The spelling of 506557783 in words is "five hundred six million, five hundred fifty-seven thousand, seven hundred eighty-three".