56202281 has 2 divisors, whose sum is σ = 56202282. Its totient is φ = 56202280.

The previous prime is 56202257. The next prime is 56202283. The reversal of 56202281 is 18220265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 5664400 = 7109^2 + 2380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56202281 is a prime.

It is a super-2 number, since 2×56202281² = 6317392779205922, which contains 22 as substring.

Together with 56202283, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56202281.

It is not a weakly prime, because it can be changed into another prime (56202283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28101140 + 28101141.

It is an arithmetic number, because the mean of its divisors is an integer number (28101141).

Almost surely, 2^56202281 is an apocalyptic number.

It is an amenable number.

56202281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56202281 is an equidigital number, since it uses as much as digits as its factorization.

56202281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 56202281 is about 7496.8180583498. The cubic root of 56202281 is about 383.0463373369.

The spelling of 56202281 in words is "fifty-six million, two hundred two thousand, two hundred eighty-one".