49530013 has 18 divisors (see below), whose sum is σ = 55708494. Its totient is φ = 43984512.

The previous prime is 49530007. The next prime is 49530071. The reversal of 49530013 is 31003594.

It can be written as a sum of positive squares in 9 ways, for example, as 29789764 + 19740249 = 5458^2 + 4443^2 .

It is not a de Polignac number, because 49530013 - 2⁵ = 49529981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49530013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49530113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 556473 + ... + 556561.

Almost surely, 2^49530013 is an apocalyptic number.

It is an amenable number.

49530013 is a deficient number, since it is larger than the sum of its proper divisors (6178481).

49530013 is an equidigital number, since it uses as much as digits as its factorization.

49530013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 49530013 is about 7037.7562475550. The cubic root of 49530013 is about 367.2452162167.

The spelling of 49530013 in words is "forty-nine million, five hundred thirty thousand, thirteen".