51212032 has 36 divisors (see below), whose sum is σ = 102760056. Its totient is φ = 25472000.

The previous prime is 51212027. The next prime is 51212039. The reversal of 51212032 is 23021215.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 51211997 and 51212015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212039) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 63858 + ... + 64654.

It is an arithmetic number, because the mean of its divisors is an integer number (2854446).

Almost surely, 2^51212032 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 51212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51380028).

51212032 is an abundant number, since it is smaller than the sum of its proper divisors (51548024).

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

51212032 is an equidigital number, since it uses as much as digits as its factorization.

51212032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51212032 is about 7156.2582401699. The cubic root of 51212032 is about 371.3561917008.

Adding to 51212032 its reverse (23021215), we get a palindrome (74233247).

It can be divided in two parts, 512 and 12032, that added together give a square (12544 = 112²).

The spelling of 51212032 in words is "fifty-one million, two hundred twelve thousand, thirty-two".