55564236 has 108 divisors (see below), whose sum is σ = 176026032. Its totient is φ = 14648256.

The previous prime is 55564231. The next prime is 55564283. The reversal of 55564236 is 63246555.

It is a happy number.

55564236 is a `hidden beast` number, since 5 + 5 + 5 + 642 + 3 + 6 = 666.

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 55564236.

It is not an unprimeable number, because it can be changed into a prime (55564231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21721 + ... + 24143.

Almost surely, 2^55564236 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 55564236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88013016).

55564236 is an abundant number, since it is smaller than the sum of its proper divisors (120461796).

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

55564236 is a wasteful number, since it uses less digits than its factorization.

55564236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460 (or 2448 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 55564236 is about 7454.1422041708. The cubic root of 55564236 is about 381.5912864063.

55564236 divided by its sum of digits (36) gives a palindrome (1543451).

The spelling of 55564236 in words is "fifty-five million, five hundred sixty-four thousand, two hundred thirty-six".