55447864 has 16 divisors (see below), whose sum is σ = 104920200. Its totient is φ = 27469152.

The previous prime is 55447859. The next prime is 55447883. The reversal of 55447864 is 46874455.

It is a self number, because there is not a number n which added to its sum of digits gives 55447864.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30922 + ... + 32665.

Almost surely, 2^55447864 is an apocalyptic number.

It is an amenable number.

55447864 is a deficient number, since it is larger than the sum of its proper divisors (49472336).

55447864 is a wasteful number, since it uses less digits than its factorization.

55447864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63702 (or 63698 counting only the distinct ones).

The product of its digits is 537600, while the sum is 43.

The square root of 55447864 is about 7446.3322515182. The cubic root of 55447864 is about 381.3247025883.

The spelling of 55447864 in words is "fifty-five million, four hundred forty-seven thousand, eight hundred sixty-four".