51650032 has 40 divisors (see below), whose sum is σ = 116091776. Its totient is φ = 21802176.

The previous prime is 51649951. The next prime is 51650033. The reversal of 51650032 is 23005615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51649985 and 51650012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51650033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4063 + ... + 10945.

Almost surely, 2^51650032 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 51650032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58045888).

51650032 is an abundant number, since it is smaller than the sum of its proper divisors (64441744).

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

51650032 is a wasteful number, since it uses less digits than its factorization.

51650032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6965 (or 6959 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51650032 is about 7186.7956698378. The cubic root of 51650032 is about 372.4118843271.

Adding to 51650032 its reverse (23005615), we get a palindrome (74655647).

The spelling of 51650032 in words is "fifty-one million, six hundred fifty thousand, thirty-two".