55299636 has 216 divisors, whose sum is σ = 179262720. Its totient is φ = 14281344.

The previous prime is 55299599. The next prime is 55299649. The reversal of 55299636 is 63699255.

55299636 is a `hidden beast` number, since 5 + 5 + 2 + 9 + 9 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55299591 and 55299600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1176565 + ... + 1176611.

It is an arithmetic number, because the mean of its divisors is an integer number (829920).

Almost surely, 2^55299636 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 55299636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89631360).

55299636 is an abundant number, since it is smaller than the sum of its proper divisors (123963084).

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

55299636 is a wasteful number, since it uses less digits than its factorization.

55299636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 111 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 55299636 is about 7436.3725027731. The cubic root of 55299636 is about 380.9846026803.

The spelling of 55299636 in words is "fifty-five million, two hundred ninety-nine thousand, six hundred thirty-six".