51330032 has 60 divisors (see below), whose sum is σ = 110555424. Its totient is φ = 23063040.

The previous prime is 51330031. The next prime is 51330049. The reversal of 51330032 is 23003315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110633 + ... + 111095.

Almost surely, 2^51330032 is an apocalyptic number.

51330032 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51330032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55277712).

51330032 is an abundant number, since it is smaller than the sum of its proper divisors (59225392).

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

51330032 is a wasteful number, since it uses less digits than its factorization.

51330032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 51330032 is about 7164.4980284735. The cubic root of 51330032 is about 371.6411925493.

Adding to 51330032 its reverse (23003315), we get a palindrome (74333347).

The spelling of 51330032 in words is "fifty-one million, three hundred thirty thousand, thirty-two".