505618441 has 2 divisors, whose sum is σ = 505618442. Its totient is φ = 505618440.

The previous prime is 505618411. The next prime is 505618457. The reversal of 505618441 is 144816505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436977216 + 68641225 = 20904^2 + 8285^2 .

It is a cyclic number.

It is not a de Polignac number, because 505618441 - 2⁷ = 505618313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505618397 and 505618406.

It is not a weakly prime, because it can be changed into another prime (505618411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252809220 + 252809221.

It is an arithmetic number, because the mean of its divisors is an integer number (252809221).

Almost surely, 2^505618441 is an apocalyptic number.

It is an amenable number.

505618441 is a deficient number, since it is larger than the sum of its proper divisors (1).

505618441 is an equidigital number, since it uses as much as digits as its factorization.

505618441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 505618441 is about 22485.9609756844. The cubic root of 505618441 is about 796.6623659679.

The spelling of 505618441 in words is "five hundred five million, six hundred eighteen thousand, four hundred forty-one".