47582221 has 4 divisors (see below), whose sum is σ = 47636992. Its totient is φ = 47527452.

The previous prime is 47582191. The next prime is 47582233. The reversal of 47582221 is 12228574.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47582221 - 2¹¹ = 47580173 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 (47582281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26061 + ... + 27826.

It is an arithmetic number, because the mean of its divisors is an integer number (11909248).

Almost surely, 2^47582221 is an apocalyptic number.

It is an amenable number.

47582221 is a deficient number, since it is larger than the sum of its proper divisors (54771).

47582221 is an equidigital number, since it uses as much as digits as its factorization.

47582221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54770.

The product of its digits is 8960, while the sum is 31.

The square root of 47582221 is about 6897.9867352728. The cubic root of 47582221 is about 362.3666629707.

The spelling of 47582221 in words is "forty-seven million, five hundred eighty-two thousand, two hundred twenty-one".