247056853 has 2 divisors, whose sum is σ = 247056854. Its totient is φ = 247056852.

The previous prime is 247056851. The next prime is 247056883. The reversal of 247056853 is 358650742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201129124 + 45927729 = 14182^2 + 6777^2 .

It is a cyclic number.

It is not a de Polignac number, because 247056853 - 2¹ = 247056851 is a prime.

It is a super-2 number, since 2×247056853² = 122074177228527218, which contains 22 as substring.

Together with 247056851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247056851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123528426 + 123528427.

It is an arithmetic number, because the mean of its divisors is an integer number (123528427).

Almost surely, 2^247056853 is an apocalyptic number.

It is an amenable number.

247056853 is a deficient number, since it is larger than the sum of its proper divisors (1).

247056853 is an equidigital number, since it uses as much as digits as its factorization.

247056853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 247056853 is about 15718.0422763142. The cubic root of 247056853 is about 627.4786714654.

The spelling of 247056853 in words is "two hundred forty-seven million, fifty-six thousand, eight hundred fifty-three".