505445093 has 2 divisors, whose sum is σ = 505445094. Its totient is φ = 505445092.

The previous prime is 505445053. The next prime is 505445117. The reversal of 505445093 is 390544505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440916004 + 64529089 = 20998^2 + 8033^2 .

It is a cyclic number.

It is not a de Polignac number, because 505445093 - 2¹² = 505440997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505445023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252722546 + 252722547.

It is an arithmetic number, because the mean of its divisors is an integer number (252722547).

Almost surely, 2^505445093 is an apocalyptic number.

It is an amenable number.

505445093 is a deficient number, since it is larger than the sum of its proper divisors (1).

505445093 is an equidigital number, since it uses as much as digits as its factorization.

505445093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 505445093 is about 22482.1060623777. The cubic root of 505445093 is about 796.5713120546.

Adding to 505445093 its reverse (390544505), we get a palindrome (895989598).

The spelling of 505445093 in words is "five hundred five million, four hundred forty-five thousand, ninety-three".