55581148 has 12 divisors (see below), whose sum is σ = 111162352. Its totient is φ = 23820480.

The previous prime is 55581131. The next prime is 55581167. The reversal of 55581148 is 84118555.

55581148 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992493 + ... + 992548.

Almost surely, 2^55581148 is an apocalyptic number.

It is an amenable number.

55581148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55581148 is a wasteful number, since it uses less digits than its factorization.

55581148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985052 (or 1985050 counting only the distinct ones).

The product of its digits is 32000, while the sum is 37.

The square root of 55581148 is about 7455.2765206932. The cubic root of 55581148 is about 381.6299972610.

The spelling of 55581148 in words is "fifty-five million, five hundred eighty-one thousand, one hundred forty-eight".