51530584 has 48 divisors (see below), whose sum is σ = 116586000. Its totient is φ = 20913984.

The previous prime is 51530579. The next prime is 51530597. The reversal of 51530584 is 48503515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18942 + ... + 21490.

It is an arithmetic number, because the mean of its divisors is an integer number (2428875).

Almost surely, 2^51530584 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 51530584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58293000).

51530584 is an abundant number, since it is smaller than the sum of its proper divisors (65055416).

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

51530584 is a wasteful number, since it uses less digits than its factorization.

51530584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 51530584 is about 7178.4806191840. The cubic root of 51530584 is about 372.1245776925.

The spelling of 51530584 in words is "fifty-one million, five hundred thirty thousand, five hundred eighty-four".