248423591 has 4 divisors (see below), whose sum is σ = 267533112. Its totient is φ = 229314072.

The previous prime is 248423519. The next prime is 248423603. The reversal of 248423591 is 195324842.

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

It is a de Polignac number, because none of the positive numbers 2^k-248423591 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 (248423191) 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, 9554741 + ... + 9554766.

It is an arithmetic number, because the mean of its divisors is an integer number (66883278).

Almost surely, 2^248423591 is an apocalyptic number.

248423591 is a deficient number, since it is larger than the sum of its proper divisors (19109521).

248423591 is a wasteful number, since it uses less digits than its factorization.

248423591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19109520.

The product of its digits is 69120, while the sum is 38.

The square root of 248423591 is about 15761.4590377922. The cubic root of 248423591 is about 628.6336314697.

The spelling of 248423591 in words is "two hundred forty-eight million, four hundred twenty-three thousand, five hundred ninety-one".