47501852221 has 2 divisors, whose sum is σ = 47501852222. Its totient is φ = 47501852220.

The previous prime is 47501852207. The next prime is 47501852369. The reversal of 47501852221 is 12225810574.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45520356025 + 1981496196 = 213355^2 + 44514^2 .

It is a cyclic number.

It is not a de Polignac number, because 47501852221 - 2¹⁷ = 47501721149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47501852521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23750926110 + 23750926111.

It is an arithmetic number, because the mean of its divisors is an integer number (23750926111).

Almost surely, 2^47501852221 is an apocalyptic number.

It is an amenable number.

47501852221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47501852221 is an equidigital number, since it uses as much as digits as its factorization.

47501852221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 47501852221 in words is "forty-seven billion, five hundred one million, eight hundred fifty-two thousand, two hundred twenty-one".