51017020 has 24 divisors (see below), whose sum is σ = 107272368. Its totient is φ = 20380800.

The previous prime is 51017009. The next prime is 51017023. The reversal of 51017020 is 2071015.

51017020 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 = 51016985 and 51017003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51017023) 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 7 ways as a sum of consecutive naturals, for example, 25455 + ... + 27385.

It is an arithmetic number, because the mean of its divisors is an integer number (4469682).

Almost surely, 2^51017020 is an apocalyptic number.

It is an amenable number.

51017020 is an abundant number, since it is smaller than the sum of its proper divisors (56255348).

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

51017020 is a wasteful number, since it uses less digits than its factorization.

51017020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261 (or 3259 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 51017020 is about 7142.6199674909. The cubic root of 51017020 is about 370.8842255898.

Adding to 51017020 its reverse (2071015), we get a palindrome (53088035).

It can be divided in two parts, 5101 and 7020, that added together give a palindrome (12121).

The spelling of 51017020 in words is "fifty-one million, seventeen thousand, twenty".