248221019 has 4 divisors (see below), whose sum is σ = 248256696. Its totient is φ = 248185344.

The previous prime is 248221009. The next prime is 248221021. The reversal of 248221019 is 910122842.

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 248221019 - 2⁴ = 248221003 is a prime.

It is a super-2 number, since 2×248221019² = 123227348546796722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 248220982 and 248221000.

It is not an unprimeable number, because it can be changed into a prime (248221009) 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, 3629 + ... + 22574.

It is an arithmetic number, because the mean of its divisors is an integer number (62064174).

Almost surely, 2^248221019 is an apocalyptic number.

248221019 is a deficient number, since it is larger than the sum of its proper divisors (35677).

248221019 is an equidigital number, since it uses as much as digits as its factorization.

248221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35676.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 248221019 is about 15755.0315455095. The cubic root of 248221019 is about 628.4627161386.

The spelling of 248221019 in words is "two hundred forty-eight million, two hundred twenty-one thousand, nineteen".