248841557 has 4 divisors (see below), whose sum is σ = 256868736. Its totient is φ = 240814380.

The previous prime is 248841533. The next prime is 248841589. The reversal of 248841557 is 755148842.

248841557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 248841557 - 2²⁰ = 247792981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248841757) 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, 4013543 + ... + 4013604.

It is an arithmetic number, because the mean of its divisors is an integer number (64217184).

Almost surely, 2^248841557 is an apocalyptic number.

It is an amenable number.

248841557 is a deficient number, since it is larger than the sum of its proper divisors (8027179).

248841557 is an equidigital number, since it uses as much as digits as its factorization.

248841557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027178.

The product of its digits is 358400, while the sum is 44.

The square root of 248841557 is about 15774.7125805829. The cubic root of 248841557 is about 628.9859869844.

The spelling of 248841557 in words is "two hundred forty-eight million, eight hundred forty-one thousand, five hundred fifty-seven".