56567129 has 2 divisors, whose sum is σ = 56567130. Its totient is φ = 56567128.

The previous prime is 56567111. The next prime is 56567153. The reversal of 56567129 is 92176565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32752729 + 23814400 = 5723^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 56567129 - 2¹² = 56563033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56567029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283564 + 28283565.

It is an arithmetic number, because the mean of its divisors is an integer number (28283565).

Almost surely, 2^56567129 is an apocalyptic number.

It is an amenable number.

56567129 is a deficient number, since it is larger than the sum of its proper divisors (1).

56567129 is an equidigital number, since it uses as much as digits as its factorization.

56567129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 56567129 is about 7521.1122182826. The cubic root of 56567129 is about 383.8734233604.

The spelling of 56567129 in words is "fifty-six million, five hundred sixty-seven thousand, one hundred twenty-nine".