55581936 has 40 divisors (see below), whose sum is σ = 143897040. Its totient is φ = 18487296.

The previous prime is 55581923. The next prime is 55581941. The reversal of 55581936 is 63918555.

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 7 ways as a sum of consecutive naturals, for example, 28480 + ... + 30368.

It is an arithmetic number, because the mean of its divisors is an integer number (3597426).

Almost surely, 2^55581936 is an apocalyptic number.

It is an amenable number.

55581936 is an abundant number, since it is smaller than the sum of its proper divisors (88315104).

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

55581936 is a wasteful number, since it uses less digits than its factorization.

55581936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513 (or 2507 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 55581936 is about 7455.3293689816. The cubic root of 55581936 is about 381.6318007683.

The spelling of 55581936 in words is "fifty-five million, five hundred eighty-one thousand, nine hundred thirty-six".