51783696 has 60 divisors (see below), whose sum is σ = 148310448. Its totient is φ = 16857792.

The previous prime is 51783689. The next prime is 51783713. The reversal of 51783696 is 69638715.

It is a happy number.

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, 2011 + ... + 10373.

Almost surely, 2^51783696 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 51783696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74155224).

51783696 is an abundant number, since it is smaller than the sum of its proper divisors (96526752).

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

51783696 is a wasteful number, since it uses less digits than its factorization.

51783696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420 (or 8411 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 51783696 is about 7196.0889377494. The cubic root of 51783696 is about 372.7328598229.

The spelling of 51783696 in words is "fifty-one million, seven hundred eighty-three thousand, six hundred ninety-six".