51916984 has 16 divisors (see below), whose sum is σ = 111250800. Its totient is φ = 22250112.

The previous prime is 51916973. The next prime is 51917009. The reversal of 51916984 is 48961915.

It is a self number, because there is not a number n which added to its sum of digits gives 51916984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463489 + ... + 463600.

It is an arithmetic number, because the mean of its divisors is an integer number (6953175).

Almost surely, 2^51916984 is an apocalyptic number.

It is an amenable number.

51916984 is an abundant number, since it is smaller than the sum of its proper divisors (59333816).

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

51916984 is a wasteful number, since it uses less digits than its factorization.

51916984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927102 (or 927098 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 51916984 is about 7205.3441277985. The cubic root of 51916984 is about 373.0523828710.

It can be divided in two parts, 51916 and 984, that added together give a square (52900 = 230²).

The spelling of 51916984 in words is "fifty-one million, nine hundred sixteen thousand, nine hundred eighty-four".