51784642 has 48 divisors (see below), whose sum is σ = 98556480. Its totient is φ = 19970496.

The previous prime is 51784639. The next prime is 51784687. The reversal of 51784642 is 24648715.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101484 + ... + 101992.

It is an arithmetic number, because the mean of its divisors is an integer number (2053260).

Almost surely, 2^51784642 is an apocalyptic number.

51784642 is a deficient number, since it is larger than the sum of its proper divisors (46771838).

51784642 is a wasteful number, since it uses less digits than its factorization.

51784642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 574 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 51784642 is about 7196.1546675985. The cubic root of 51784642 is about 372.7351295407.

The spelling of 51784642 in words is "fifty-one million, seven hundred eighty-four thousand, six hundred forty-two".