51017008 has 40 divisors (see below), whose sum is σ = 113662368. Its totient is φ = 21729792.

The previous prime is 51016951. The next prime is 51017009. The reversal of 51017008 is 80071015.

It is a self number, because there is not a number n which added to its sum of digits gives 51017008.

It is not an unprimeable number, because it can be changed into a prime (51017009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18060 + ... + 20692.

Almost surely, 2^51017008 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 51017008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56831184).

51017008 is an abundant number, since it is smaller than the sum of its proper divisors (62645360).

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

51017008 is a wasteful number, since it uses less digits than its factorization.

51017008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2815 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 51017008 is about 7142.6191274630. The cubic root of 51017008 is about 370.8841965105.

The spelling of 51017008 in words is "fifty-one million, seventeen thousand, eight".