51852813 has 8 divisors (see below), whose sum is σ = 69665376. Its totient is φ = 34304400.

The previous prime is 51852811. The next prime is 51852821. The reversal of 51852813 is 31825815.

It is a happy number.

51852813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51852813 - 2¹ = 51852811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51852811) 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 7 ways as a sum of consecutive naturals, for example, 65578 + ... + 66363.

It is an arithmetic number, because the mean of its divisors is an integer number (8708172).

Almost surely, 2^51852813 is an apocalyptic number.

It is an amenable number.

51852813 is a deficient number, since it is larger than the sum of its proper divisors (17812563).

51852813 is a wasteful number, since it uses less digits than its factorization.

51852813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132075.

The product of its digits is 9600, while the sum is 33.

The square root of 51852813 is about 7200.8897366923. The cubic root of 51852813 is about 372.8986180682.

The spelling of 51852813 in words is "fifty-one million, eight hundred fifty-two thousand, eight hundred thirteen".