247055129 has 2 divisors, whose sum is σ = 247055130. Its totient is φ = 247055128.

The previous prime is 247055111. The next prime is 247055143. The reversal of 247055129 is 921550742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163149529 + 83905600 = 12773^2 + 9160^2 .

It is a cyclic number.

It is not a de Polignac number, because 247055129 - 2¹² = 247051033 is a prime.

It is a super-2 number, since 2×247055129² = 122072473530413282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (247055329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123527564 + 123527565.

It is an arithmetic number, because the mean of its divisors is an integer number (123527565).

Almost surely, 2^247055129 is an apocalyptic number.

It is an amenable number.

247055129 is a deficient number, since it is larger than the sum of its proper divisors (1).

247055129 is an equidigital number, since it uses as much as digits as its factorization.

247055129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 247055129 is about 15717.9874347831. The cubic root of 247055129 is about 627.4772119151.

The spelling of 247055129 in words is "two hundred forty-seven million, fifty-five thousand, one hundred twenty-nine".