56522281 has 2 divisors, whose sum is σ = 56522282. Its totient is φ = 56522280.

The previous prime is 56522243. The next prime is 56522299. The reversal of 56522281 is 18222565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54997056 + 1525225 = 7416^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 56522281 - 2⁹ = 56521769 is a prime.

It is a super-2 number, since 2×56522281² = 6389536498885922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56522581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28261140 + 28261141.

It is an arithmetic number, because the mean of its divisors is an integer number (28261141).

Almost surely, 2^56522281 is an apocalyptic number.

It is an amenable number.

56522281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56522281 is an equidigital number, since it uses as much as digits as its factorization.

56522281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 56522281 is about 7518.1301531697. The cubic root of 56522281 is about 383.7719480138.

The spelling of 56522281 in words is "fifty-six million, five hundred twenty-two thousand, two hundred eighty-one".