52450611221 has 2 divisors, whose sum is σ = 52450611222. Its totient is φ = 52450611220.

The previous prime is 52450611209. The next prime is 52450611223. The reversal of 52450611221 is 12211605425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44190346225 + 8260264996 = 210215^2 + 90886^2 .

It is a cyclic number.

It is not a de Polignac number, because 52450611221 - 2¹⁰ = 52450610197 is a prime.

It is a super-2 number, since 2×52450611221² (a number of 22 digits) contains 22 as substring.

Together with 52450611223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52450611223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26225305610 + 26225305611.

It is an arithmetic number, because the mean of its divisors is an integer number (26225305611).

Almost surely, 2^52450611221 is an apocalyptic number.

It is an amenable number.

52450611221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52450611221 is an equidigital number, since it uses as much as digits as its factorization.

52450611221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 52450611221 in words is "fifty-two billion, four hundred fifty million, six hundred eleven thousand, two hundred twenty-one".