56000621 has 2 divisors, whose sum is σ = 56000622. Its totient is φ = 56000620.

The previous prime is 56000597. The next prime is 56000639. The reversal of 56000621 is 12600065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 26894596 = 5395^2 + 5186^2 .

It is a cyclic number.

It is not a de Polignac number, because 56000621 - 2¹⁰ = 55999597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56000593 and 56000602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56000671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000310 + 28000311.

It is an arithmetic number, because the mean of its divisors is an integer number (28000311).

Almost surely, 2^56000621 is an apocalyptic number.

It is an amenable number.

56000621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56000621 is an equidigital number, since it uses as much as digits as its factorization.

56000621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 56000621 is about 7483.3562657407. The cubic root of 56000621 is about 382.5876507519.

Adding to 56000621 its reverse (12600065), we get a palindrome (68600686).

The spelling of 56000621 in words is "fifty-six million, six hundred twenty-one", and thus it is an aban number.