505581049 has 2 divisors, whose sum is σ = 505581050. Its totient is φ = 505581048.

The previous prime is 505581023. The next prime is 505581059. The reversal of 505581049 is 940185505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414855424 + 90725625 = 20368^2 + 9525^2 .

It is a cyclic number.

It is not a de Polignac number, because 505581049 - 2⁷ = 505580921 is a prime.

It is a super-2 number, since 2×505581049² = 511224394215880802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505580999 and 505581017.

It is not a weakly prime, because it can be changed into another prime (505581019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252790524 + 252790525.

It is an arithmetic number, because the mean of its divisors is an integer number (252790525).

Almost surely, 2^505581049 is an apocalyptic number.

It is an amenable number.

505581049 is a deficient number, since it is larger than the sum of its proper divisors (1).

505581049 is an equidigital number, since it uses as much as digits as its factorization.

505581049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 505581049 is about 22485.1295081883. The cubic root of 505581049 is about 796.6427269601.

The spelling of 505581049 in words is "five hundred five million, five hundred eighty-one thousand, forty-nine".