55643535 has 24 divisors (see below), whose sum is σ = 98504640. Its totient is φ = 29044032.

The previous prime is 55643503. The next prime is 55643551. The reversal of 55643535 is 53534655.

55643535 is a `hidden beast` number, since 5 + 5 + 643 + 5 + 3 + 5 = 666.

55643535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55643535 - 2⁵ = 55643503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55643535.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11040 + ... + 15269.

It is an arithmetic number, because the mean of its divisors is an integer number (4104360).

Almost surely, 2^55643535 is an apocalyptic number.

55643535 is a deficient number, since it is larger than the sum of its proper divisors (42861105).

55643535 is a wasteful number, since it uses less digits than its factorization.

55643535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26367 (or 26364 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The square root of 55643535 is about 7459.4594308167. The cubic root of 55643535 is about 381.7727305978.

The spelling of 55643535 in words is "fifty-five million, six hundred forty-three thousand, five hundred thirty-five".