56847121 has 4 divisors (see below), whose sum is σ = 57223744. Its totient is φ = 56470500.

The previous prime is 56847101. The next prime is 56847127. The reversal of 56847121 is 12174865.

56847121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-56847121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56847127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188085 + ... + 188386.

It is an arithmetic number, because the mean of its divisors is an integer number (14305936).

Almost surely, 2^56847121 is an apocalyptic number.

It is an amenable number.

56847121 is a deficient number, since it is larger than the sum of its proper divisors (376623).

56847121 is a wasteful number, since it uses less digits than its factorization.

56847121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376622.

The product of its digits is 13440, while the sum is 34.

The square root of 56847121 is about 7539.7029782346. The cubic root of 56847121 is about 384.5057378083.

The spelling of 56847121 in words is "fifty-six million, eight hundred forty-seven thousand, one hundred twenty-one".