56191584 has 48 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 18591360.

The previous prime is 56191573. The next prime is 56191609. The reversal of 56191584 is 48519165.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×56191584² = 6314988224858112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11239 + ... + 15449.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 2^56191584 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 56191584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74299680).

56191584 is an abundant number, since it is smaller than the sum of its proper divisors (92407776).

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

56191584 is a wasteful number, since it uses less digits than its factorization.

56191584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363 (or 4355 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 56191584 is about 7496.1045883846. The cubic root of 56191584 is about 383.0220340133.

The spelling of 56191584 in words is "fifty-six million, one hundred ninety-one thousand, five hundred eighty-four".