56281742281 has 2 divisors, whose sum is σ = 56281742282. Its totient is φ = 56281742280.

The previous prime is 56281742207. The next prime is 56281742333. The reversal of 56281742281 is 18224718265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55989024400 + 292717881 = 236620^2 + 17109^2 .

It is a cyclic number.

It is not a de Polignac number, because 56281742281 - 2¹⁵ = 56281709513 is a prime.

It is a super-2 number, since 2×56281742281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56281742681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28140871140 + 28140871141.

It is an arithmetic number, because the mean of its divisors is an integer number (28140871141).

Almost surely, 2^56281742281 is an apocalyptic number.

It is an amenable number.

56281742281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56281742281 is an equidigital number, since it uses as much as digits as its factorization.

56281742281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 46.

The spelling of 56281742281 in words is "fifty-six billion, two hundred eighty-one million, seven hundred forty-two thousand, two hundred eighty-one".