55644533 has 16 divisors (see below), whose sum is σ = 66096000. Its totient is φ = 45834432.

The previous prime is 55644529. The next prime is 55644551. The reversal of 55644533 is 33544655.

It is not a de Polignac number, because 55644533 - 2² = 55644529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55644493 and 55644502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54098 + ... + 55116.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2^55644533 is an apocalyptic number.

It is an amenable number.

55644533 is a deficient number, since it is larger than the sum of its proper divisors (10451467).

55644533 is a wasteful number, since it uses less digits than its factorization.

55644533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its digits is 108000, while the sum is 35.

The square root of 55644533 is about 7459.5263254445. The cubic root of 55644533 is about 381.7750130247.

The spelling of 55644533 in words is "fifty-five million, six hundred forty-four thousand, five hundred thirty-three".