247510961 has 2 divisors, whose sum is σ = 247510962. Its totient is φ = 247510960.

The previous prime is 247510933. The next prime is 247511021. The reversal of 247510961 is 169015742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191545600 + 55965361 = 13840^2 + 7481^2 .

It is a cyclic number.

It is not a de Polignac number, because 247510961 - 2¹⁰ = 247509937 is a prime.

It is a super-2 number, since 2×247510961² = 122523351630287042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247510561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123755480 + 123755481.

It is an arithmetic number, because the mean of its divisors is an integer number (123755481).

Almost surely, 2^247510961 is an apocalyptic number.

It is an amenable number.

247510961 is a deficient number, since it is larger than the sum of its proper divisors (1).

247510961 is an equidigital number, since it uses as much as digits as its factorization.

247510961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 247510961 is about 15732.4810821434. The cubic root of 247510961 is about 627.8628862420.

The spelling of 247510961 in words is "two hundred forty-seven million, five hundred ten thousand, nine hundred sixty-one".