56311001 has 2 divisors, whose sum is σ = 56311002. Its totient is φ = 56311000.

The previous prime is 56310983. The next prime is 56311007. The reversal of 56311001 is 10011365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 10883401 = 6740^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 56311001 - 2⁶ = 56310937 is a prime.

It is not a weakly prime, because it can be changed into another prime (56311007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28155500 + 28155501.

It is an arithmetic number, because the mean of its divisors is an integer number (28155501).

Almost surely, 2^56311001 is an apocalyptic number.

It is an amenable number.

56311001 is a deficient number, since it is larger than the sum of its proper divisors (1).

56311001 is an equidigital number, since it uses as much as digits as its factorization.

56311001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 56311001 is about 7504.0656313761. The cubic root of 56311001 is about 383.2931717639.

Adding to 56311001 its reverse (10011365), we get a palindrome (66322366).

The spelling of 56311001 in words is "fifty-six million, three hundred eleven thousand, one".