56847221 has 8 divisors (see below), whose sum is σ = 61903200. Its totient is φ = 51997680.

The previous prime is 56847179. The next prime is 56847227. The reversal of 56847221 is 12274865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56847221 - 2¹⁰ = 56846197 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 (56847227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51035 + ... + 52136.

It is an arithmetic number, because the mean of its divisors is an integer number (7737900).

Almost surely, 2^56847221 is an apocalyptic number.

It is an amenable number.

56847221 is a deficient number, since it is larger than the sum of its proper divisors (5055979).

56847221 is a wasteful number, since it uses less digits than its factorization.

56847221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103219.

The product of its digits is 26880, while the sum is 35.

The square root of 56847221 is about 7539.7096097927. The cubic root of 56847221 is about 384.5059632700.

The spelling of 56847221 in words is "fifty-six million, eight hundred forty-seven thousand, two hundred twenty-one".