55543873 has 32 divisors (see below), whose sum is σ = 73359360. Its totient is φ = 40772160.

The previous prime is 55543861. The next prime is 55543877. The reversal of 55543873 is 37834555.

It is a de Polignac number, because none of the positive numbers 2^k-55543873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55543877) 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 31 ways as a sum of consecutive naturals, for example, 139711 + ... + 140107.

It is an arithmetic number, because the mean of its divisors is an integer number (2292480).

Almost surely, 2^55543873 is an apocalyptic number.

It is an amenable number.

55543873 is a deficient number, since it is larger than the sum of its proper divisors (17815487).

55543873 is a wasteful number, since it uses less digits than its factorization.

55543873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its digits is 252000, while the sum is 40.

The square root of 55543873 is about 7452.7761941440. The cubic root of 55543873 is about 381.5446659340.

The spelling of 55543873 in words is "fifty-five million, five hundred forty-three thousand, eight hundred seventy-three".