55643351 has 4 divisors (see below), whose sum is σ = 55659552. Its totient is φ = 55627152.

The previous prime is 55643311. The next prime is 55643353. The reversal of 55643351 is 15334655.

55643351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55643351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55643353) 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 3 ways as a sum of consecutive naturals, for example, 686 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (13914888).

Almost surely, 2^55643351 is an apocalyptic number.

55643351 is a deficient number, since it is larger than the sum of its proper divisors (16201).

55643351 is a wasteful number, since it uses less digits than its factorization.

55643351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200.

The product of its digits is 27000, while the sum is 32.

The square root of 55643351 is about 7459.4470974731. The cubic root of 55643351 is about 381.7723097866.

The spelling of 55643351 in words is "fifty-five million, six hundred forty-three thousand, three hundred fifty-one".