248945 has 4 divisors (see below), whose sum is σ = 298740. Its totient is φ = 199152.

The previous prime is 248909. The next prime is 248971. The reversal of 248945 is 549842.

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 69169 + 179776 = 263^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248945 is a prime.

It is a super-2 number, since 2×248945² = 123947226050, which contains 22 as substring.

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, 24890 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (74685).

2²⁴⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

248945 is a deficient number, since it is larger than the sum of its proper divisors (49795).

248945 is an equidigital number, since it uses as much as digits as its factorization.

248945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49794.

The product of its digits is 11520, while the sum is 32.

The square root of 248945 is about 498.9438846203. The cubic root of 248945 is about 62.9073131035.

The spelling of 248945 in words is "two hundred forty-eight thousand, nine hundred forty-five".