51890608 has 90 divisors (see below), whose sum is σ = 128786028. Its totient is φ = 20180160.

The previous prime is 51890581. The next prime is 51890623. The reversal of 51890608 is 80609815.

51890608 is nontrivially palindromic in base 3.

51890608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17 ways as a sum of consecutive naturals, for example, 94591 + ... + 95137.

Almost surely, 2^51890608 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 51890608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64393014).

51890608 is an abundant number, since it is smaller than the sum of its proper divisors (76895420).

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

51890608 is a wasteful number, since it uses less digits than its factorization.

51890608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 51890608 is about 7203.5135871323. The cubic root of 51890608 is about 372.9891967632.

The spelling of 51890608 in words is "fifty-one million, eight hundred ninety thousand, six hundred eight".