47237253221 has 2 divisors, whose sum is σ = 47237253222. Its totient is φ = 47237253220.

The previous prime is 47237253197. The next prime is 47237253247. The reversal of 47237253221 is 12235273274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30824824900 + 16412428321 = 175570^2 + 128111^2 .

It is a cyclic number.

It is not a de Polignac number, because 47237253221 - 2¹⁸ = 47236991077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47237253121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23618626610 + 23618626611.

It is an arithmetic number, because the mean of its divisors is an integer number (23618626611).

Almost surely, 2^47237253221 is an apocalyptic number.

It is an amenable number.

47237253221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47237253221 is an equidigital number, since it uses as much as digits as its factorization.

47237253221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 38.

The spelling of 47237253221 in words is "forty-seven billion, two hundred thirty-seven million, two hundred fifty-three thousand, two hundred twenty-one".