48122813 has 4 divisors (see below), whose sum is σ = 48372348. Its totient is φ = 47873280.

The previous prime is 48122797. The next prime is 48122821. The reversal of 48122813 is 31822184.

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 21362884 + 26759929 = 4622^2 + 5173^2 .

It is a cyclic number.

It is not a de Polignac number, because 48122813 - 2⁴ = 48122797 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 (48122843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124478 + ... + 124863.

It is an arithmetic number, because the mean of its divisors is an integer number (12093087).

Almost surely, 2^48122813 is an apocalyptic number.

It is an amenable number.

48122813 is a deficient number, since it is larger than the sum of its proper divisors (249535).

48122813 is a wasteful number, since it uses less digits than its factorization.

48122813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249534.

The product of its digits is 3072, while the sum is 29.

The square root of 48122813 is about 6937.0608329465. The cubic root of 48122813 is about 363.7338074140.

Adding to 48122813 its reverse (31822184), we get a palindrome (79944997).

The spelling of 48122813 in words is "forty-eight million, one hundred twenty-two thousand, eight hundred thirteen".