47293221 has 16 divisors (see below), whose sum is σ = 66286080. Its totient is φ = 29934960.

The previous prime is 47293217. The next prime is 47293237. The reversal of 47293221 is 12239274.

It is not a de Polignac number, because 47293221 - 2² = 47293217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47293721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7126 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (4142880).

Almost surely, 2^47293221 is an apocalyptic number.

It is an amenable number.

47293221 is a deficient number, since it is larger than the sum of its proper divisors (18992859).

47293221 is a wasteful number, since it uses less digits than its factorization.

47293221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096.

The product of its digits is 6048, while the sum is 30.

The square root of 47293221 is about 6877.0066889600. The cubic root of 47293221 is about 361.6315375235.

The spelling of 47293221 in words is "forty-seven million, two hundred ninety-three thousand, two hundred twenty-one".