248563381 has 4 divisors (see below), whose sum is σ = 271160064. Its totient is φ = 225966700.

The previous prime is 248563351. The next prime is 248563391. The reversal of 248563381 is 183365842.

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 248563381 - 2¹³ = 248555189 is a prime.

It is a super-2 number, since 2×248563381² = 123567508748302322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248563351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11298325 + ... + 11298346.

It is an arithmetic number, because the mean of its divisors is an integer number (67790016).

Almost surely, 2^248563381 is an apocalyptic number.

It is an amenable number.

248563381 is a deficient number, since it is larger than the sum of its proper divisors (22596683).

248563381 is a wasteful number, since it uses less digits than its factorization.

248563381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22596682.

The product of its digits is 138240, while the sum is 40.

The square root of 248563381 is about 15765.8929655126. The cubic root of 248563381 is about 628.7515217999.

The spelling of 248563381 in words is "two hundred forty-eight million, five hundred sixty-three thousand, three hundred eighty-one".