51335460 has 108 divisors (see below), whose sum is σ = 171233244. Its totient is φ = 12439680.

The previous prime is 51335447. The next prime is 51335503. The reversal of 51335460 is 6453315.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 37675044 = 3696^2 + 6138^2 .

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 20602 + ... + 22958.

It is an arithmetic number, because the mean of its divisors is an integer number (1585493).

Almost surely, 2^51335460 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 51335460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85616622).

51335460 is an abundant number, since it is smaller than the sum of its proper divisors (119897784).

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

51335460 is a wasteful number, since it uses less digits than its factorization.

51335460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 51335460 is about 7164.8768307627. The cubic root of 51335460 is about 371.6542920755.

Adding to 51335460 its reverse (6453315), we get a palindrome (57788775).

The spelling of 51335460 in words is "fifty-one million, three hundred thirty-five thousand, four hundred sixty".