505005055549 has 2 divisors, whose sum is σ = 505005055550. Its totient is φ = 505005055548.

The previous prime is 505005055519. The next prime is 505005055573. The reversal of 505005055549 is 945550500505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491566449924 + 13438605625 = 701118^2 + 115925^2 .

It is a cyclic number.

It is not a de Polignac number, because 505005055549 - 2¹⁹ = 505004531261 is a prime.

It is a super-2 number, since 2×505005055549² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505005055519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252502527774 + 252502527775.

It is an arithmetic number, because the mean of its divisors is an integer number (252502527775).

Almost surely, 2^505005055549 is an apocalyptic number.

It is an amenable number.

505005055549 is a deficient number, since it is larger than the sum of its proper divisors (1).

505005055549 is an equidigital number, since it uses as much as digits as its factorization.

505005055549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 505005055549 in words is "five hundred five billion, five million, fifty-five thousand, five hundred forty-nine".