51789560 has 64 divisors (see below), whose sum is σ = 124649280. Its totient is φ = 19317760.

The previous prime is 51789559. The next prime is 51789571. The reversal of 51789560 is 6598715.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37034 + ... + 38406.

It is an arithmetic number, because the mean of its divisors is an integer number (1947645).

Almost surely, 2^51789560 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 51789560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62324640).

51789560 is an abundant number, since it is smaller than the sum of its proper divisors (72859720).

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

51789560 is a wasteful number, since it uses less digits than its factorization.

51789560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51789560 is about 7196.4963697622. The cubic root of 51789560 is about 372.7469287491.

The spelling of 51789560 in words is "fifty-one million, seven hundred eighty-nine thousand, five hundred sixty".