56091648 has 132 divisors (see below), whose sum is σ = 162613680. Its totient is φ = 17141760.

The previous prime is 56091599. The next prime is 56091661. The reversal of 56091648 is 84619065.

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, 1809393 + ... + 1809423.

Almost surely, 2^56091648 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 56091648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81306840).

56091648 is an abundant number, since it is smaller than the sum of its proper divisors (106522032).

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

56091648 is a wasteful number, since it uses less digits than its factorization.

56091648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 56091648 is about 7489.4357597886. The cubic root of 56091648 is about 382.7948327029.

The spelling of 56091648 in words is "fifty-six million, ninety-one thousand, six hundred forty-eight".