51716232 has 96 divisors (see below), whose sum is σ = 149385600. Its totient is φ = 16749504.

The previous prime is 51716219. The next prime is 51716239. The reversal of 51716232 is 23261715.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 51716196 and 51716205.

It is not an unprimeable number, because it can be changed into a prime (51716239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71569 + ... + 72287.

It is an arithmetic number, because the mean of its divisors is an integer number (1556100).

Almost surely, 2^51716232 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 51716232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74692800).

51716232 is an abundant number, since it is smaller than the sum of its proper divisors (97669368).

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

51716232 is a wasteful number, since it uses less digits than its factorization.

51716232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 761 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 51716232 is about 7191.3998637261. The cubic root of 51716232 is about 372.5709235403.

Adding to 51716232 its reverse (23261715), we get a palindrome (74977947).

The spelling of 51716232 in words is "fifty-one million, seven hundred sixteen thousand, two hundred thirty-two".