51494568 has 32 divisors (see below), whose sum is σ = 128952960. Its totient is φ = 17136000.

The previous prime is 51494567. The next prime is 51494591. The reversal of 51494568 is 86549415.

51494568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51494567) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16596 + ... + 19452.

It is an arithmetic number, because the mean of its divisors is an integer number (4029780).

Almost surely, 2^51494568 is an apocalyptic number.

It is an amenable number.

51494568 is an abundant number, since it is smaller than the sum of its proper divisors (77458392).

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

51494568 is a wasteful number, since it uses less digits than its factorization.

51494568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617 (or 3613 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 51494568 is about 7175.9715718500. The cubic root of 51494568 is about 372.0378617955.

The spelling of 51494568 in words is "fifty-one million, four hundred ninety-four thousand, five hundred sixty-eight".