505555441 has 8 divisors (see below), whose sum is σ = 513142344. Its totient is φ = 497986560.

The previous prime is 505555423. The next prime is 505555447. The reversal of 505555441 is 144555505.

It can be written as a sum of positive squares in 4 ways, for example, as 161823841 + 343731600 = 12721^2 + 18540^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505555441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505555397 and 505555406.

It is not an unprimeable number, because it can be changed into a prime (505555447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58521 + ... + 66601.

It is an arithmetic number, because the mean of its divisors is an integer number (64142793).

Almost surely, 2^505555441 is an apocalyptic number.

It is an amenable number.

505555441 is a deficient number, since it is larger than the sum of its proper divisors (7586903).

505555441 is an equidigital number, since it uses as much as digits as its factorization.

505555441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9011.

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 505555441 is about 22484.5600579598. The cubic root of 505555441 is about 796.6292765803.

The spelling of 505555441 in words is "five hundred five million, five hundred fifty-five thousand, four hundred forty-one".