55543536 has 160 divisors (see below), whose sum is σ = 172012800. Its totient is φ = 17107200.

The previous prime is 55543531. The next prime is 55543541. The reversal of 55543536 is 63534555.

It is an interprime number because it is at equal distance from previous prime (55543531) and next prime (55543541).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55543536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55543531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549886 + ... + 549986.

It is an arithmetic number, because the mean of its divisors is an integer number (1075080).

Almost surely, 2^55543536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55543536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86006400).

55543536 is an abundant number, since it is smaller than the sum of its proper divisors (116469264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55543536 is a wasteful number, since it uses less digits than its factorization.

55543536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 192 counting only the distinct ones).

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

The square root of 55543536 is about 7452.7535850852. The cubic root of 55543536 is about 381.5438942868.

The spelling of 55543536 in words is "fifty-five million, five hundred forty-three thousand, five hundred thirty-six".