51859456 has 52 divisors (see below), whose sum is σ = 113232384. Its totient is φ = 23552000.

The previous prime is 51859447. The next prime is 51859477. The reversal of 51859456 is 65495815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44481 + ... + 45631.

Almost surely, 2^51859456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51859456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56616192).

51859456 is an abundant number, since it is smaller than the sum of its proper divisors (61372928).

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

51859456 is a wasteful number, since it uses less digits than its factorization.

51859456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1164 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The square root of 51859456 is about 7201.3509843640. The cubic root of 51859456 is about 372.9145417285.

It can be divided in two parts, 5185 and 9456, that added together give a palindrome (14641).

The spelling of 51859456 in words is "fifty-one million, eight hundred fifty-nine thousand, four hundred fifty-six".