55443556 has 24 divisors (see below), whose sum is σ = 111323520. Its totient is φ = 23668032.

The previous prime is 55443533. The next prime is 55443569. The reversal of 55443556 is 65534455.

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, 3600 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (4638480).

Almost surely, 2^55443556 is an apocalyptic number.

It is an amenable number.

55443556 is an abundant number, since it is smaller than the sum of its proper divisors (55879964).

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

55443556 is a wasteful number, since it uses less digits than its factorization.

55443556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803 (or 7801 counting only the distinct ones).

The product of its digits is 180000, while the sum is 37.

The square root of 55443556 is about 7446.0429759705. The cubic root of 55443556 is about 381.3148267082.

The spelling of 55443556 in words is "fifty-five million, four hundred forty-three thousand, five hundred fifty-six".