55043636 has 12 divisors (see below), whose sum is σ = 96546912. Its totient is φ = 27458808.

The previous prime is 55043617. The next prime is 55043647. The reversal of 55043636 is 63634055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13760 + ... + 17303.

It is an arithmetic number, because the mean of its divisors is an integer number (8045576).

Almost surely, 2^55043636 is an apocalyptic number.

It is an amenable number.

55043636 is a deficient number, since it is larger than the sum of its proper divisors (41503276).

55043636 is a wasteful number, since it uses less digits than its factorization.

55043636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31510 (or 31508 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 55043636 is about 7419.1398423267. The cubic root of 55043636 is about 380.3957926015.

The spelling of 55043636 in words is "fifty-five million, forty-three thousand, six hundred thirty-six".