51012288 has 112 divisors (see below), whose sum is σ = 153070560. Its totient is φ = 16653312.

The previous prime is 51012281. The next prime is 51012289. The reversal of 51012288 is 88221015.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51012281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91306 + ... + 91862.

Almost surely, 2^51012288 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 51012288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76535280).

51012288 is an abundant number, since it is smaller than the sum of its proper divisors (102058272).

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

51012288 is a wasteful number, since it uses less digits than its factorization.

51012288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 51012288 is about 7142.2887088104. The cubic root of 51012288 is about 370.8727583159.

The spelling of 51012288 in words is "fifty-one million, twelve thousand, two hundred eighty-eight".