505052255225521 has 4 divisors (see below), whose sum is σ = 505139468537344. Its totient is φ = 504965041913700.

The previous prime is 505052255225509. The next prime is 505052255225527. The reversal of 505052255225521 is 125522552250505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505052255225521 - 2²⁷ = 505052121007793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505052255225527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43606647225 + ... + 43606658806.

It is an arithmetic number, because the mean of its divisors is an integer number (126284867134336).

Almost surely, 2^{505052255225521} is an apocalyptic number.

It is an amenable number.

505052255225521 is a deficient number, since it is larger than the sum of its proper divisors (87213311823).

505052255225521 is an equidigital number, since it uses as much as digits as its factorization.

505052255225521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87213311822.

The product of its (nonzero) digits is 2500000, while the sum is 46.

The spelling of 505052255225521 in words is "five hundred five trillion, fifty-two billion, two hundred fifty-five million, two hundred twenty-five thousand, five hundred twenty-one".