56520229 has 2 divisors, whose sum is σ = 56520230. Its totient is φ = 56520228.

The previous prime is 56520209. The next prime is 56520239. The reversal of 56520229 is 92202565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 18105025 = 6198^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 56520229 - 2⁵ = 56520197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56520229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56520209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28260114 + 28260115.

It is an arithmetic number, because the mean of its divisors is an integer number (28260115).

Almost surely, 2^56520229 is an apocalyptic number.

It is an amenable number.

56520229 is a deficient number, since it is larger than the sum of its proper divisors (1).

56520229 is an equidigital number, since it uses as much as digits as its factorization.

56520229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 56520229 is about 7517.9936818276. The cubic root of 56520229 is about 383.7673037712.

The spelling of 56520229 in words is "fifty-six million, five hundred twenty thousand, two hundred twenty-nine".