247263047 has 2 divisors, whose sum is σ = 247263048. Its totient is φ = 247263046.

The previous prime is 247262999. The next prime is 247263053. The reversal of 247263047 is 740362742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247263047 - 2²² = 243068743 is a prime.

It is a super-2 number, since 2×247263047² = 122278028823448418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247262998 and 247263016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247263067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123631523 + 123631524.

It is an arithmetic number, because the mean of its divisors is an integer number (123631524).

Almost surely, 2^247263047 is an apocalyptic number.

247263047 is a deficient number, since it is larger than the sum of its proper divisors (1).

247263047 is an equidigital number, since it uses as much as digits as its factorization.

247263047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 247263047 is about 15724.6000585071. The cubic root of 247263047 is about 627.6531877870.

The spelling of 247263047 in words is "two hundred forty-seven million, two hundred sixty-three thousand, forty-seven".