51017560 has 64 divisors (see below), whose sum is σ = 127941120. Its totient is φ = 18149760.

The previous prime is 51017543. The next prime is 51017581. The reversal of 51017560 is 6571015.

51017560 = T₄₈₅ + T₄₈₆ + ... + T₇₄₈.

51017560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19447 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (1999080).

Almost surely, 2^51017560 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 51017560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63970560).

51017560 is an abundant number, since it is smaller than the sum of its proper divisors (76923560).

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

51017560 is a wasteful number, since it uses less digits than its factorization.

51017560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 51017560 is about 7142.6577686461. The cubic root of 51017560 is about 370.8855341516.

Adding to 51017560 its reverse (6571015), we get a palindrome (57588575).

The spelling of 51017560 in words is "fifty-one million, seventeen thousand, five hundred sixty".