248545013 has 4 divisors (see below), whose sum is σ = 249165228. Its totient is φ = 247924800.

The previous prime is 248545007. The next prime is 248545039. The reversal of 248545013 is 310545842.

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 242674084 + 5870929 = 15578^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 248545013 - 2¹⁴ = 248528629 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 (248542013) 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, 309506 + ... + 310307.

It is an arithmetic number, because the mean of its divisors is an integer number (62291307).

Almost surely, 2^248545013 is an apocalyptic number.

It is an amenable number.

248545013 is a deficient number, since it is larger than the sum of its proper divisors (620215).

248545013 is an equidigital number, since it uses as much as digits as its factorization.

248545013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620214.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 248545013 is about 15765.3104314504. The cubic root of 248545013 is about 628.7360338757.

The spelling of 248545013 in words is "two hundred forty-eight million, five hundred forty-five thousand, thirteen".