51016560 has 80 divisors (see below), whose sum is σ = 180750336. Its totient is φ = 11660544.

The previous prime is 51016543. The next prime is 51016571. The reversal of 51016560 is 6561015.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51016560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13504 + ... + 16863.

Almost surely, 2^51016560 is an apocalyptic number.

It is an amenable number.

51016560 is an abundant number, since it is smaller than the sum of its proper divisors (129733776).

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

51016560 is a wasteful number, since it uses less digits than its factorization.

51016560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30390 (or 30384 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51016560 is about 7142.5877663491. The cubic root of 51016560 is about 370.8831108817.

Adding to 51016560 its reverse (6561015), we get a palindrome (57577575).

The spelling of 51016560 in words is "fifty-one million, sixteen thousand, five hundred sixty".