52225587221 has 4 divisors (see below), whose sum is σ = 52961158944. Its totient is φ = 51490015500.

The previous prime is 52225587217. The next prime is 52225587233. The reversal of 52225587221 is 12278552225.

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 52225587221 - 2² = 52225587217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52225517221) 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, 367785755 + ... + 367785896.

It is an arithmetic number, because the mean of its divisors is an integer number (13240289736).

Almost surely, 2^52225587221 is an apocalyptic number.

It is an amenable number.

52225587221 is a deficient number, since it is larger than the sum of its proper divisors (735571723).

52225587221 is an equidigital number, since it uses as much as digits as its factorization.

52225587221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735571722.

The product of its digits is 224000, while the sum is 41.

The spelling of 52225587221 in words is "fifty-two billion, two hundred twenty-five million, five hundred eighty-seven thousand, two hundred twenty-one".