56222261 has 2 divisors, whose sum is σ = 56222262. Its totient is φ = 56222260.

The previous prime is 56222249. The next prime is 56222323. The reversal of 56222261 is 16222265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52635025 + 3587236 = 7255^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 56222261 - 2¹⁸ = 55960117 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56222261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56222861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28111130 + 28111131.

It is an arithmetic number, because the mean of its divisors is an integer number (28111131).

Almost surely, 2^56222261 is an apocalyptic number.

It is an amenable number.

56222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

56222261 is an equidigital number, since it uses as much as digits as its factorization.

56222261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 56222261 is about 7498.1505052913. The cubic root of 56222261 is about 383.0917231525.

The spelling of 56222261 in words is "fifty-six million, two hundred twenty-two thousand, two hundred sixty-one".