505255537 has 2 divisors, whose sum is σ = 505255538. Its totient is φ = 505255536.

The previous prime is 505255511. The next prime is 505255561. The reversal of 505255537 is 735552505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442513296 + 62742241 = 21036^2 + 7921^2 .

It is a cyclic number.

It is not a de Polignac number, because 505255537 - 2²⁷ = 371037809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505255496 and 505255505.

It is not a weakly prime, because it can be changed into another prime (505255507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252627768 + 252627769.

It is an arithmetic number, because the mean of its divisors is an integer number (252627769).

Almost surely, 2^505255537 is an apocalyptic number.

It is an amenable number.

505255537 is a deficient number, since it is larger than the sum of its proper divisors (1).

505255537 is an equidigital number, since it uses as much as digits as its factorization.

505255537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131250, while the sum is 37.

The square root of 505255537 is about 22477.8899588017. The cubic root of 505255537 is about 796.4717207878.

The spelling of 505255537 in words is "five hundred five million, two hundred fifty-five thousand, five hundred thirty-seven".