47627221 has 2 divisors, whose sum is σ = 47627222. Its totient is φ = 47627220.

The previous prime is 47627213. The next prime is 47627233. The reversal of 47627221 is 12272674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 1726596 = 6775^2 + 1314^2 .

It is a cyclic number.

It is not a de Polignac number, because 47627221 - 2³ = 47627213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47627201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23813610 + 23813611.

It is an arithmetic number, because the mean of its divisors is an integer number (23813611).

Almost surely, 2^47627221 is an apocalyptic number.

It is an amenable number.

47627221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47627221 is an equidigital number, since it uses as much as digits as its factorization.

47627221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 47627221 is about 6901.2477857269. The cubic root of 47627221 is about 362.4808608207.

Adding to 47627221 its reverse (12272674), we get a palindrome (59899895).

The spelling of 47627221 in words is "forty-seven million, six hundred twenty-seven thousand, two hundred twenty-one".