56445646273 has 2 divisors, whose sum is σ = 56445646274. Its totient is φ = 56445646272.

The previous prime is 56445646267. The next prime is 56445646297. The reversal of 56445646273 is 37264654465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51303609009 + 5142037264 = 226503^2 + 71708^2 .

It is a cyclic number.

It is not a de Polignac number, because 56445646273 - 2⁹ = 56445645761 is a prime.

It is a super-2 number, since 2×56445646273² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56445646273.

It is not a weakly prime, because it can be changed into another prime (56445646073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28222823136 + 28222823137.

It is an arithmetic number, because the mean of its divisors is an integer number (28222823137).

Almost surely, 2^56445646273 is an apocalyptic number.

It is an amenable number.

56445646273 is a deficient number, since it is larger than the sum of its proper divisors (1).

56445646273 is an equidigital number, since it uses as much as digits as its factorization.

56445646273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 52.

The spelling of 56445646273 in words is "fifty-six billion, four hundred forty-five million, six hundred forty-six thousand, two hundred seventy-three".