56206121 has 8 divisors (see below), whose sum is σ = 57698088. Its totient is φ = 54720000.

The previous prime is 56206109. The next prime is 56206133. The reversal of 56206121 is 12160265.

56206121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56206109) and next prime (56206133).

It can be written as a sum of positive squares in 4 ways, for example, as 6574096 + 49632025 = 2564^2 + 7045^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56206121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56206141) 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, 23501 + ... + 25781.

It is an arithmetic number, because the mean of its divisors is an integer number (7212261).

Almost surely, 2^56206121 is an apocalyptic number.

It is an amenable number.

56206121 is a deficient number, since it is larger than the sum of its proper divisors (1491967).

56206121 is a wasteful number, since it uses less digits than its factorization.

56206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 56206121 is about 7497.0741626317. The cubic root of 56206121 is about 383.0550609712.

Adding to 56206121 its reverse (12160265), we get a palindrome (68366386).

The spelling of 56206121 in words is "fifty-six million, two hundred six thousand, one hundred twenty-one".