248511 has 4 divisors (see below), whose sum is σ = 331352. Its totient is φ = 165672.

The previous prime is 248509. The next prime is 248533. The reversal of 248511 is 115842.

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

It is not a de Polignac number, because 248511 - 2¹ = 248509 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 248511.

It is not an unprimeable number, because it can be changed into a prime (241511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41416 + ... + 41421.

It is an arithmetic number, because the mean of its divisors is an integer number (82838).

2²⁴⁸⁵¹¹ is an apocalyptic number.

248511 is a deficient number, since it is larger than the sum of its proper divisors (82841).

248511 is an equidigital number, since it uses as much as digits as its factorization.

248511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82840.

The product of its digits is 320, while the sum is 21.

The square root of 248511 is about 498.5087762517. The cubic root of 248511 is about 62.8707352050.

The spelling of 248511 in words is "two hundred forty-eight thousand, five hundred eleven".