248135785 has 4 divisors (see below), whose sum is σ = 297762948. Its totient is φ = 198508624.

The previous prime is 248135777. The next prime is 248135807. The reversal of 248135785 is 587531842.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78641424 + 169494361 = 8868^2 + 13019^2 .

It is a cyclic number.

It is not a de Polignac number, because 248135785 - 2³ = 248135777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24813574 + ... + 24813583.

It is an arithmetic number, because the mean of its divisors is an integer number (74440737).

Almost surely, 2^248135785 is an apocalyptic number.

It is an amenable number.

248135785 is a deficient number, since it is larger than the sum of its proper divisors (49627163).

248135785 is an equidigital number, since it uses as much as digits as its factorization.

248135785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49627162.

The product of its digits is 268800, while the sum is 43.

The square root of 248135785 is about 15752.3263361321. The cubic root of 248135785 is about 628.3907741737.

The spelling of 248135785 in words is "two hundred forty-eight million, one hundred thirty-five thousand, seven hundred eighty-five".