505755285523 has 4 divisors (see below), whose sum is σ = 505757448160. Its totient is φ = 505753122888.

The previous prime is 505755285493. The next prime is 505755285533. The reversal of 505755285523 is 325582557505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325582557505 = 5 ⋅65116511501.

It is a cyclic number.

It is not a de Polignac number, because 505755285523 - 2¹³ = 505755277331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505755285533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681168 + ... + 1214701.

It is an arithmetic number, because the mean of its divisors is an integer number (126439362040).

Almost surely, 2^505755285523 is an apocalyptic number.

505755285523 is a deficient number, since it is larger than the sum of its proper divisors (2162637).

505755285523 is a wasteful number, since it uses less digits than its factorization.

505755285523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162636.

The product of its (nonzero) digits is 10500000, while the sum is 52.

The spelling of 505755285523 in words is "five hundred five billion, seven hundred fifty-five million, two hundred eighty-five thousand, five hundred twenty-three".