56001641 has 2 divisors, whose sum is σ = 56001642. Its totient is φ = 56001640.

The previous prime is 56001611. The next prime is 56001643. The reversal of 56001641 is 14610065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39639616 + 16362025 = 6296^2 + 4045^2 .

It is a cyclic number.

It is not a de Polignac number, because 56001641 - 2⁶ = 56001577 is a prime.

Together with 56001643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56001643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000820 + 28000821.

It is an arithmetic number, because the mean of its divisors is an integer number (28000821).

Almost surely, 2^56001641 is an apocalyptic number.

It is an amenable number.

56001641 is a deficient number, since it is larger than the sum of its proper divisors (1).

56001641 is an equidigital number, since it uses as much as digits as its factorization.

56001641 is an evil number, because the sum of its binary digits is even.

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

The square root of 56001641 is about 7483.4244166691. The cubic root of 56001641 is about 382.5899735657.

The spelling of 56001641 in words is "fifty-six million, one thousand, six hundred forty-one".