248772971 has 2 divisors, whose sum is σ = 248772972. Its totient is φ = 248772970.

The previous prime is 248772863. The next prime is 248773013. The reversal of 248772971 is 179277842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248772971 is a prime.

It is a super-2 number, since 2×248772971² = 123775982200333682, 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 (248772371) 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, 124386485 + 124386486.

It is an arithmetic number, because the mean of its divisors is an integer number (124386486).

Almost surely, 2^248772971 is an apocalyptic number.

248772971 is a deficient number, since it is larger than the sum of its proper divisors (1).

248772971 is an equidigital number, since it uses as much as digits as its factorization.

248772971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 47.

The square root of 248772971 is about 15772.5385084329. The cubic root of 248772971 is about 628.9281943908.

The spelling of 248772971 in words is "two hundred forty-eight million, seven hundred seventy-two thousand, nine hundred seventy-one".