55944445 has 4 divisors (see below), whose sum is σ = 67133340. Its totient is φ = 44755552.

The previous prime is 55944439. The next prime is 55944457. The reversal of 55944445 is 54444955.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17081689 + 38862756 = 4133^2 + 6234^2 .

It is a cyclic number.

It is not a de Polignac number, because 55944445 - 2³ = 55944437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55944398 and 55944407.

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, 5594440 + ... + 5594449.

It is an arithmetic number, because the mean of its divisors is an integer number (16783335).

Almost surely, 2^55944445 is an apocalyptic number.

It is an amenable number.

55944445 is a deficient number, since it is larger than the sum of its proper divisors (11188895).

55944445 is a wasteful number, since it uses less digits than its factorization.

55944445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11188894.

The product of its digits is 288000, while the sum is 40.

The square root of 55944445 is about 7479.6019279103. The cubic root of 55944445 is about 382.4596793473.

The spelling of 55944445 in words is "fifty-five million, nine hundred forty-four thousand, four hundred forty-five".