56956021 has 8 divisors (see below), whose sum is σ = 59378688. Its totient is φ = 54570000.

The previous prime is 56956019. The next prime is 56956043. The reversal of 56956021 is 12065965.

It is a happy number.

56956021 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 56956021 - 2¹ = 56956019 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 (56956051) 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, 5965 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (7422336).

Almost surely, 2^56956021 is an apocalyptic number.

It is an amenable number.

56956021 is a deficient number, since it is larger than the sum of its proper divisors (2422667).

56956021 is a wasteful number, since it uses less digits than its factorization.

56956021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18323.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 56956021 is about 7546.9212928187. The cubic root of 56956021 is about 384.7511091630.

The spelling of 56956021 in words is "fifty-six million, nine hundred fifty-six thousand, twenty-one".