51266560 has 176 divisors, whose sum is σ = 141488640. Its totient is φ = 17694720.

The previous prime is 51266549. The next prime is 51266561. The reversal of 51266560 is 6566215.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (51266561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1653745 + ... + 1653775.

Almost surely, 2^51266560 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 51266560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70744320).

51266560 is an abundant number, since it is smaller than the sum of its proper divisors (90222080).

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

51266560 is a wasteful number, since it uses less digits than its factorization.

51266560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 51266560 is about 7160.0670387923. The cubic root of 51266560 is about 371.4879454253.

The spelling of 51266560 in words is "fifty-one million, two hundred sixty-six thousand, five hundred sixty".