248569457 has 4 divisors (see below), whose sum is σ = 261652080. Its totient is φ = 235486836.

The previous prime is 248569423. The next prime is 248569463. The reversal of 248569457 is 754965842.

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 not a de Polignac number, because 248569457 - 2¹⁰ = 248568433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248569957) 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, 6541283 + ... + 6541320.

It is an arithmetic number, because the mean of its divisors is an integer number (65413020).

Almost surely, 2^248569457 is an apocalyptic number.

It is an amenable number.

248569457 is a deficient number, since it is larger than the sum of its proper divisors (13082623).

248569457 is a wasteful number, since it uses less digits than its factorization.

248569457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13082622.

The product of its digits is 2419200, while the sum is 50.

The square root of 248569457 is about 15766.0856587804. The cubic root of 248569457 is about 628.7566449240.

The spelling of 248569457 in words is "two hundred forty-eight million, five hundred sixty-nine thousand, four hundred fifty-seven".