55219536 has 160 divisors (see below), whose sum is σ = 171774720. Its totient is φ = 16920576.

The previous prime is 55219523. The next prime is 55219537. The reversal of 55219536 is 63591255.

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 55219536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55219537) 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, 536061 + ... + 536163.

It is an arithmetic number, because the mean of its divisors is an integer number (1073592).

Almost surely, 2^55219536 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 55219536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85887360).

55219536 is an abundant number, since it is smaller than the sum of its proper divisors (116555184).

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

55219536 is a wasteful number, since it uses less digits than its factorization.

55219536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 198 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 55219536 is about 7430.9848607032. The cubic root of 55219536 is about 380.8005652253.

55219536 divided by its sum of digits (36) gives a triangular number (1533876 = T₁₇₅₁).

It can be divided in two parts, 55219 and 536, that added together give a palindrome (55755).

The spelling of 55219536 in words is "fifty-five million, two hundred nineteen thousand, five hundred thirty-six".