56200621 has 4 divisors (see below), whose sum is σ = 56247292. Its totient is φ = 56153952.

The previous prime is 56200609. The next prime is 56200631. The reversal of 56200621 is 12600265.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51408900 + 4791721 = 7170^2 + 2189^2 .

It is a cyclic number.

It is not a de Polignac number, because 56200621 - 2¹¹ = 56198573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56200592 and 56200601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56200631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21480 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (14061823).

Almost surely, 2^56200621 is an apocalyptic number.

It is an amenable number.

56200621 is a deficient number, since it is larger than the sum of its proper divisors (46671).

56200621 is a wasteful number, since it uses less digits than its factorization.

56200621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46670.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 56200621 is about 7496.7073438944. The cubic root of 56200621 is about 383.0425660595.

Adding to 56200621 its reverse (12600265), we get a palindrome (68800886).

The spelling of 56200621 in words is "fifty-six million, two hundred thousand, six hundred twenty-one".