56180129 has 2 divisors, whose sum is σ = 56180130. Its totient is φ = 56180128.

The previous prime is 56180123. The next prime is 56180239. The reversal of 56180129 is 92108165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55651600 + 528529 = 7460^2 + 727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56180129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56180095 and 56180104.

It is not a weakly prime, because it can be changed into another prime (56180123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28090064 + 28090065.

It is an arithmetic number, because the mean of its divisors is an integer number (28090065).

Almost surely, 2^56180129 is an apocalyptic number.

It is an amenable number.

56180129 is a deficient number, since it is larger than the sum of its proper divisors (1).

56180129 is an equidigital number, since it uses as much as digits as its factorization.

56180129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 56180129 is about 7495.3404859286. The cubic root of 56180129 is about 382.9960051121.

Subtracting 56180129 from its reverse (92108165), we obtain a square (35928036 = 5994²).

The spelling of 56180129 in words is "fifty-six million, one hundred eighty thousand, one hundred twenty-nine".