55446444 has 30 divisors (see below), whose sum is σ = 144948804. Its totient is φ = 18482040.

The previous prime is 55446409. The next prime is 55446481. The reversal of 55446444 is 44464455.

55446444 is a `hidden beast` number, since 5 + 5 + 4 + 4 + 644 + 4 = 666.

55446444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55446399 and 55446408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85242 + ... + 85889.

Almost surely, 2^55446444 is an apocalyptic number.

55446444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55446444 is an abundant number, since it is smaller than the sum of its proper divisors (89502360).

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

55446444 is a wasteful number, since it uses less digits than its factorization.

55446444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171147 (or 171136 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 55446444 is about 7446.2369019526. The cubic root of 55446444 is about 381.3214473640.

The spelling of 55446444 in words is "fifty-five million, four hundred forty-six thousand, four hundred forty-four".