247164529 has 2 divisors, whose sum is σ = 247164530. Its totient is φ = 247164528.

The previous prime is 247164527. The next prime is 247164553. The reversal of 247164529 is 925461742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177608929 + 69555600 = 13327^2 + 8340^2 .

It is a cyclic number.

It is not a de Polignac number, because 247164529 - 2¹ = 247164527 is a prime.

It is a super-2 number, since 2×247164529² = 122180608791583682, which contains 22 as substring.

Together with 247164527, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 247164491 and 247164500.

It is not a weakly prime, because it can be changed into another prime (247164527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123582264 + 123582265.

It is an arithmetic number, because the mean of its divisors is an integer number (123582265).

Almost surely, 2^247164529 is an apocalyptic number.

It is an amenable number.

247164529 is a deficient number, since it is larger than the sum of its proper divisors (1).

247164529 is an equidigital number, since it uses as much as digits as its factorization.

247164529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 247164529 is about 15721.4671389155. The cubic root of 247164529 is about 627.5698172609.

The spelling of 247164529 in words is "two hundred forty-seven million, one hundred sixty-four thousand, five hundred twenty-nine".