56163641 has 2 divisors, whose sum is σ = 56163642. Its totient is φ = 56163640.

The previous prime is 56163629. The next prime is 56163643. The reversal of 56163641 is 14636165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34810000 + 21353641 = 5900^2 + 4621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56163641 is a prime.

Together with 56163643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56163598 and 56163607.

It is not a weakly prime, because it can be changed into another prime (56163643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28081820 + 28081821.

It is an arithmetic number, because the mean of its divisors is an integer number (28081821).

Almost surely, 2^56163641 is an apocalyptic number.

It is an amenable number.

56163641 is a deficient number, since it is larger than the sum of its proper divisors (1).

56163641 is an equidigital number, since it uses as much as digits as its factorization.

56163641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 56163641 is about 7494.2405218941. The cubic root of 56163641 is about 382.9585336424.

The spelling of 56163641 in words is "fifty-six million, one hundred sixty-three thousand, six hundred forty-one".