54551643 has 16 divisors (see below), whose sum is σ = 74198016. Its totient is φ = 35642880.

The previous prime is 54551621. The next prime is 54551647. The reversal of 54551643 is 34615545.

It is not a de Polignac number, because 54551643 - 2⁵ = 54551611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54551647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 40446 + ... + 41772.

It is an arithmetic number, because the mean of its divisors is an integer number (4637376).

Almost surely, 2^54551643 is an apocalyptic number.

54551643 is a deficient number, since it is larger than the sum of its proper divisors (19646373).

54551643 is a wasteful number, since it uses less digits than its factorization.

54551643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its digits is 36000, while the sum is 33.

The square root of 54551643 is about 7385.9084072306. The cubic root of 54551643 is about 379.2590432306.

The spelling of 54551643 in words is "fifty-four million, five hundred fifty-one thousand, six hundred forty-three".