55243646 has 16 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 26881920.

The previous prime is 55243619. The next prime is 55243651. The reversal of 55243646 is 64634255.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58490 + ... + 59426.

It is an arithmetic number, because the mean of its divisors is an integer number (5318460).

Almost surely, 2^55243646 is an apocalyptic number.

55243646 is a deficient number, since it is larger than the sum of its proper divisors (29851714).

55243646 is a wasteful number, since it uses less digits than its factorization.

55243646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699.

The product of its digits is 86400, while the sum is 35.

The square root of 55243646 is about 7432.6069450765. The cubic root of 55243646 is about 380.8559789815.

The spelling of 55243646 in words is "fifty-five million, two hundred forty-three thousand, six hundred forty-six".