54311643 has 12 divisors (see below), whose sum is σ = 78890760. Its totient is φ = 36004416.

The previous prime is 54311629. The next prime is 54311669. The reversal of 54311643 is 34611345.

54311643 is a `hidden beast` number, since 5 + 4 + 3 + 11 + 643 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-54311643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54311143) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15246 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (6574230).

Almost surely, 2^54311643 is an apocalyptic number.

54311643 is a deficient number, since it is larger than the sum of its proper divisors (24579117).

54311643 is a wasteful number, since it uses less digits than its factorization.

54311643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33898 (or 33895 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 54311643 is about 7369.6433427948. The cubic root of 54311643 is about 378.7020420930.

Adding to 54311643 its reverse (34611345), we get a palindrome (88922988).

The spelling of 54311643 in words is "fifty-four million, three hundred eleven thousand, six hundred forty-three".