55646445 has 16 divisors (see below), whose sum is σ = 89136000. Its totient is φ = 29644224.

The previous prime is 55646443. The next prime is 55646467. The reversal of 55646445 is 54464655.

55646445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55646445 - 2¹ = 55646443 is a prime.

It is a super-2 number, since 2×55646445² = 6193053682276050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55646441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17056 + ... + 20054.

It is an arithmetic number, because the mean of its divisors is an integer number (5571000).

Almost surely, 2^55646445 is an apocalyptic number.

It is an amenable number.

55646445 is a deficient number, since it is larger than the sum of its proper divisors (33489555).

55646445 is a wasteful number, since it uses less digits than its factorization.

55646445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244.

The product of its digits is 288000, while the sum is 39.

The square root of 55646445 is about 7459.6544826151. The cubic root of 55646445 is about 381.7793856943.

The spelling of 55646445 in words is "fifty-five million, six hundred forty-six thousand, four hundred forty-five".