51235560 has 96 divisors (see below), whose sum is σ = 171924480. Its totient is φ = 13219200.

The previous prime is 51235553. The next prime is 51235567. The reversal of 51235560 is 6553215.

51235560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51235553) and next prime (51235567).

It is not an unprimeable number, because it can be changed into a prime (51235567) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8865 + ... + 13455.

It is an arithmetic number, because the mean of its divisors is an integer number (1790880).

Almost surely, 2^51235560 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 51235560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85962240).

51235560 is an abundant number, since it is smaller than the sum of its proper divisors (120688920).

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

51235560 is a wasteful number, since it uses less digits than its factorization.

51235560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 51235560 is about 7157.9019272410. The cubic root of 51235560 is about 371.4130528878.

Adding to 51235560 its reverse (6553215), we get a palindrome (57788775).

The spelling of 51235560 in words is "fifty-one million, two hundred thirty-five thousand, five hundred sixty".