51791696 has 40 divisors (see below), whose sum is σ = 110570304. Its totient is φ = 23304960.

The previous prime is 51791647. The next prime is 51791711. The reversal of 51791696 is 69619715.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16700 + ... + 19556.

Almost surely, 2^51791696 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 51791696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55285152).

51791696 is an abundant number, since it is smaller than the sum of its proper divisors (58778608).

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

51791696 is a wasteful number, since it uses less digits than its factorization.

51791696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2973 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 51791696 is about 7196.6447737817. The cubic root of 51791696 is about 372.7520531827.

The spelling of 51791696 in words is "fifty-one million, seven hundred ninety-one thousand, six hundred ninety-six".