56838821 has 8 divisors (see below), whose sum is σ = 61269600. Its totient is φ = 52416432.

The previous prime is 56838809. The next prime is 56838829. The reversal of 56838821 is 12883865.

56838821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56838821 - 2²² = 52644517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56838829) 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 7 ways as a sum of consecutive naturals, for example, 26030 + ... + 28128.

It is an arithmetic number, because the mean of its divisors is an integer number (7658700).

Almost surely, 2^56838821 is an apocalyptic number.

It is an amenable number.

56838821 is a deficient number, since it is larger than the sum of its proper divisors (4430779).

56838821 is a wasteful number, since it uses less digits than its factorization.

56838821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195.

The product of its digits is 92160, while the sum is 41.

The square root of 56838821 is about 7539.1525385815. The cubic root of 56838821 is about 384.4870235626.

The spelling of 56838821 in words is "fifty-six million, eight hundred thirty-eight thousand, eight hundred twenty-one".