51853844 has 24 divisors (see below), whose sum is σ = 104173440. Its totient is φ = 22123296.

The previous prime is 51853787. The next prime is 51853849. The reversal of 51853844 is 44835815.

It is a super-2 number, since 2×51853844² = 5377642275152672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51853798 and 51853807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51853849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369 + ... + 10455.

It is an arithmetic number, because the mean of its divisors is an integer number (4340560).

Almost surely, 2^51853844 is an apocalyptic number.

It is an amenable number.

51853844 is an abundant number, since it is smaller than the sum of its proper divisors (52319596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51853844 is a wasteful number, since it uses less digits than its factorization.

51853844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327 (or 8325 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 51853844 is about 7200.9613247121. The cubic root of 51853844 is about 372.9010895248.

The spelling of 51853844 in words is "fifty-one million, eight hundred fifty-three thousand, eight hundred forty-four".