51089120 has 48 divisors (see below), whose sum is σ = 121564800. Its totient is φ = 20289024.

The previous prime is 51089113. The next prime is 51089153. The reversal of 51089120 is 2198015.

It is a happy number.

It is a super-2 number, since 2×51089120² = 5220196364748800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51089120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22769 + ... + 24911.

It is an arithmetic number, because the mean of its divisors is an integer number (2532600).

Almost surely, 2^51089120 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 51089120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60782400).

51089120 is an abundant number, since it is smaller than the sum of its proper divisors (70475680).

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

51089120 is a wasteful number, since it uses less digits than its factorization.

51089120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2299 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 51089120 is about 7147.6653531066. The cubic root of 51089120 is about 371.0588612009.

The spelling of 51089120 in words is "fifty-one million, eighty-nine thousand, one hundred twenty".