55519236 has 48 divisors (see below), whose sum is σ = 146395200. Its totient is φ = 18190656.

The previous prime is 55519199. The next prime is 55519237. The reversal of 55519236 is 63291555.

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 55519236.

It is not an unprimeable number, because it can be changed into a prime (55519237) 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, 2016 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (3049900).

Almost surely, 2^55519236 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 55519236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73197600).

55519236 is an abundant number, since it is smaller than the sum of its proper divisors (90875964).

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

55519236 is a wasteful number, since it uses less digits than its factorization.

55519236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785 (or 8777 counting only the distinct ones).

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

The square root of 55519236 is about 7451.1231368164. The cubic root of 55519236 is about 381.4882450328.

It can be divided in two parts, 55519 and 236, that added together give a palindrome (55755).

The spelling of 55519236 in words is "fifty-five million, five hundred nineteen thousand, two hundred thirty-six".