248667851 has 4 divisors (see below), whose sum is σ = 249478152. Its totient is φ = 247857552.

The previous prime is 248667847. The next prime is 248667863. The reversal of 248667851 is 158766842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248667851 - 2² = 248667847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 248667796 and 248667805.

It is not an unprimeable number, because it can be changed into a prime (248667871) 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 in 3 ways as a sum of consecutive naturals, for example, 404690 + ... + 405303.

It is an arithmetic number, because the mean of its divisors is an integer number (62369538).

Almost surely, 2^248667851 is an apocalyptic number.

248667851 is a deficient number, since it is larger than the sum of its proper divisors (810301).

248667851 is an equidigital number, since it uses as much as digits as its factorization.

248667851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810300.

The product of its digits is 645120, while the sum is 47.

The square root of 248667851 is about 15769.2057821566. The cubic root of 248667851 is about 628.8395965475.

The spelling of 248667851 in words is "two hundred forty-eight million, six hundred sixty-seven thousand, eight hundred fifty-one".