505052557 has 2 divisors, whose sum is σ = 505052558. Its totient is φ = 505052556.

The previous prime is 505052551. The next prime is 505052641. The reversal of 505052557 is 755250505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498807556 + 6245001 = 22334^2 + 2499^2 .

It is a cyclic number.

It is not a de Polignac number, because 505052557 - 2¹⁵ = 505019789 is a prime.

It is a super-3 number, since 3×505052557³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505052551) 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, 252526278 + 252526279.

It is an arithmetic number, because the mean of its divisors is an integer number (252526279).

Almost surely, 2^505052557 is an apocalyptic number.

It is an amenable number.

505052557 is a deficient number, since it is larger than the sum of its proper divisors (1).

505052557 is an equidigital number, since it uses as much as digits as its factorization.

505052557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 505052557 is about 22473.3744017226. The cubic root of 505052557 is about 796.3650490332.

The spelling of 505052557 in words is "five hundred five million, fifty-two thousand, five hundred fifty-seven".