52064154221 has 4 divisors (see below), whose sum is σ = 52070413500. Its totient is φ = 52057894944.

The previous prime is 52064154209. The next prime is 52064154271. The reversal of 52064154221 is 12245146025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26614333321 + 25449820900 = 163139^2 + 159530^2 .

It is a cyclic number.

It is not a de Polignac number, because 52064154221 - 2¹⁴ = 52064137837 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 (52064154271) 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, 3117146 + ... + 3133803.

It is an arithmetic number, because the mean of its divisors is an integer number (13017603375).

Almost surely, 2^52064154221 is an apocalyptic number.

It is an amenable number.

52064154221 is a deficient number, since it is larger than the sum of its proper divisors (6259279).

52064154221 is an equidigital number, since it uses as much as digits as its factorization.

52064154221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259278.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 52064154221 in words is "fifty-two billion, sixty-four million, one hundred fifty-four thousand, two hundred twenty-one".