51789884 has 6 divisors (see below), whose sum is σ = 90632304. Its totient is φ = 25894940.

The previous prime is 51789883. The next prime is 51789887. The reversal of 51789884 is 48898715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51789883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473732 + ... + 6473739.

It is an arithmetic number, because the mean of its divisors is an integer number (15105384).

Almost surely, 2^51789884 is an apocalyptic number.

It is an amenable number.

51789884 is a deficient number, since it is larger than the sum of its proper divisors (38842420).

51789884 is a wasteful number, since it uses less digits than its factorization.

51789884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947475 (or 12947473 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 51789884 is about 7196.5188806811. The cubic root of 51789884 is about 372.7477060599.

The spelling of 51789884 in words is "fifty-one million, seven hundred eighty-nine thousand, eight hundred eighty-four".