55643662 has 16 divisors (see below), whose sum is σ = 84756672. Its totient is φ = 27394560.

The previous prime is 55643639. The next prime is 55643681. The reversal of 55643662 is 26634655.

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 7 ways as a sum of consecutive naturals, for example, 44587 + ... + 45817.

It is an arithmetic number, because the mean of its divisors is an integer number (5297292).

Almost surely, 2^55643662 is an apocalyptic number.

55643662 is a deficient number, since it is larger than the sum of its proper divisors (29113010).

55643662 is a wasteful number, since it uses less digits than its factorization.

55643662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563.

The product of its digits is 129600, while the sum is 37.

The square root of 55643662 is about 7459.4679434930. The cubic root of 55643662 is about 381.7730210484.

The spelling of 55643662 in words is "fifty-five million, six hundred forty-three thousand, six hundred sixty-two".