247548923 has 2 divisors, whose sum is σ = 247548924. Its totient is φ = 247548922.

The previous prime is 247548881. The next prime is 247548937. The reversal of 247548923 is 329845742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247548923 - 2⁸ = 247548667 is a prime.

It is a super-2 number, since 2×247548923² = 122560938556919858, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (247548523) 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, 123774461 + 123774462.

It is an arithmetic number, because the mean of its divisors is an integer number (123774462).

Almost surely, 2^247548923 is an apocalyptic number.

247548923 is a deficient number, since it is larger than the sum of its proper divisors (1).

247548923 is an equidigital number, since it uses as much as digits as its factorization.

247548923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 247548923 is about 15733.6875207308. The cubic root of 247548923 is about 627.8949840965.

The spelling of 247548923 in words is "two hundred forty-seven million, five hundred forty-eight thousand, nine hundred twenty-three".