56558641 has 2 divisors, whose sum is σ = 56558642. Its totient is φ = 56558640.

The previous prime is 56558629. The next prime is 56558657. The reversal of 56558641 is 14685565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34468641 + 22090000 = 5871^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 56558641 - 2¹¹ = 56556593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56558594 and 56558603.

It is not a weakly prime, because it can be changed into another prime (56558741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28279320 + 28279321.

It is an arithmetic number, because the mean of its divisors is an integer number (28279321).

Almost surely, 2^56558641 is an apocalyptic number.

It is an amenable number.

56558641 is a deficient number, since it is larger than the sum of its proper divisors (1).

56558641 is an equidigital number, since it uses as much as digits as its factorization.

56558641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 40.

The square root of 56558641 is about 7520.5479188687. The cubic root of 56558641 is about 383.8542220995.

The spelling of 56558641 in words is "fifty-six million, five hundred fifty-eight thousand, six hundred forty-one".