56604303281 has 2 divisors, whose sum is σ = 56604303282. Its totient is φ = 56604303280.

The previous prime is 56604303269. The next prime is 56604303391. The reversal of 56604303281 is 18230340665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38690890000 + 17913413281 = 196700^2 + 133841^2 .

It is a cyclic number.

It is not a de Polignac number, because 56604303281 - 2¹⁴ = 56604286897 is a prime.

It is a super-2 number, since 2×56604303281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56604303251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302151640 + 28302151641.

It is an arithmetic number, because the mean of its divisors is an integer number (28302151641).

Almost surely, 2^56604303281 is an apocalyptic number.

It is an amenable number.

56604303281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56604303281 is an equidigital number, since it uses as much as digits as its factorization.

56604303281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 56604303281 in words is "fifty-six billion, six hundred four million, three hundred three thousand, two hundred eighty-one".