248781001 has 4 divisors (see below), whose sum is σ = 284321152. Its totient is φ = 213240852.

The previous prime is 248780971. The next prime is 248781019. The reversal of 248781001 is 100187842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 248781001 - 2⁵ = 248780969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248781031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17770065 + ... + 17770078.

It is an arithmetic number, because the mean of its divisors is an integer number (71080288).

Almost surely, 2^248781001 is an apocalyptic number.

It is an amenable number.

248781001 is a deficient number, since it is larger than the sum of its proper divisors (35540151).

248781001 is an equidigital number, since it uses as much as digits as its factorization.

248781001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35540150.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 248781001 is about 15772.7930627394. The cubic root of 248781001 is about 628.9349612554.

The spelling of 248781001 in words is "two hundred forty-eight million, seven hundred eighty-one thousand, one".