505441109 has 2 divisors, whose sum is σ = 505441110. Its totient is φ = 505441108.

The previous prime is 505441073. The next prime is 505441133. The reversal of 505441109 is 901144505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505260484 + 180625 = 22478^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 505441109 - 2⁸ = 505440853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505441159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252720554 + 252720555.

It is an arithmetic number, because the mean of its divisors is an integer number (252720555).

Almost surely, 2^505441109 is an apocalyptic number.

It is an amenable number.

505441109 is a deficient number, since it is larger than the sum of its proper divisors (1).

505441109 is an equidigital number, since it uses as much as digits as its factorization.

505441109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 505441109 is about 22482.0174584044. The cubic root of 505441109 is about 796.5692191478.

The spelling of 505441109 in words is "five hundred five million, four hundred forty-one thousand, one hundred nine".