51025120 has 24 divisors (see below), whose sum is σ = 120547224. Its totient is φ = 20409984.

The previous prime is 51025087. The next prime is 51025129. The reversal of 51025120 is 2152015.

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 = 51025094 and 51025103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159294 + ... + 159613.

It is an arithmetic number, because the mean of its divisors is an integer number (5022801).

Almost surely, 2^51025120 is an apocalyptic number.

It is an amenable number.

51025120 is an abundant number, since it is smaller than the sum of its proper divisors (69522104).

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

51025120 is a wasteful number, since it uses less digits than its factorization.

51025120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318922 (or 318914 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 51025120 is about 7143.1869638138. The cubic root of 51025120 is about 370.9038530478.

Adding to 51025120 its reverse (2152015), we get a palindrome (53177135).

The spelling of 51025120 in words is "fifty-one million, twenty-five thousand, one hundred twenty".