51804936 has 48 divisors (see below), whose sum is σ = 142412400. Its totient is φ = 17008992.

The previous prime is 51804913. The next prime is 51804953. The reversal of 51804936 is 63940815.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51804936.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546 + ... + 10193.

It is an arithmetic number, because the mean of its divisors is an integer number (2966925).

Almost surely, 2^51804936 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 51804936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71206200).

51804936 is an abundant number, since it is smaller than the sum of its proper divisors (90607464).

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

51804936 is a wasteful number, since it uses less digits than its factorization.

51804936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10818 (or 10811 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 51804936 is about 7197.5645881090. The cubic root of 51804936 is about 372.7838138515.

The spelling of 51804936 in words is "fifty-one million, eight hundred four thousand, nine hundred thirty-six".