51261324 has 48 divisors (see below), whose sum is σ = 128822400. Its totient is φ = 15805696.

The previous prime is 51261313. The next prime is 51261359. The reversal of 51261324 is 42316215.

51261324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51261294 and 51261303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9907 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (2683800).

Almost surely, 2^51261324 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 51261324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64411200).

51261324 is an abundant number, since it is smaller than the sum of its proper divisors (77561076).

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

51261324 is a wasteful number, since it uses less digits than its factorization.

51261324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342 (or 4340 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 51261324 is about 7159.7013904213. The cubic root of 51261324 is about 371.4752979535.

Adding to 51261324 its reverse (42316215), we get a palindrome (93577539).

The spelling of 51261324 in words is "fifty-one million, two hundred sixty-one thousand, three hundred twenty-four".