247051061 has 2 divisors, whose sum is σ = 247051062. Its totient is φ = 247051060.

The previous prime is 247051033. The next prime is 247051099. The reversal of 247051061 is 160150742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244140625 + 2910436 = 15625^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 247051061 - 2¹⁴ = 247034677 is a prime.

It is a super-2 number, since 2×247051061² = 122068453482451442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247051061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247051031) 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, 123525530 + 123525531.

It is an arithmetic number, because the mean of its divisors is an integer number (123525531).

Almost surely, 2^247051061 is an apocalyptic number.

It is an amenable number.

247051061 is a deficient number, since it is larger than the sum of its proper divisors (1).

247051061 is an equidigital number, since it uses as much as digits as its factorization.

247051061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 247051061 is about 15717.8580283702. The cubic root of 247051061 is about 627.4737678912.

The spelling of 247051061 in words is "two hundred forty-seven million, fifty-one thousand, sixty-one".