55155004452 has 144 divisors (see below), whose sum is σ = 148219728384. Its totient is φ = 17262720000.

The previous prime is 55155004447. The next prime is 55155004501. The reversal of 55155004452 is 25440055155.

55155004452 is a `hidden beast` number, since 5 + 51 + 550 + 0 + 4 + 4 + 52 = 666.

It is a super-2 number, since 2×55155004452² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16556427 + ... + 16559757.

Almost surely, 2^55155004452 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 55155004452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74109864192).

55155004452 is an abundant number, since it is smaller than the sum of its proper divisors (93064723932).

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

55155004452 is a wasteful number, since it uses less digits than its factorization.

55155004452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 55155004452 in words is "fifty-five billion, one hundred fifty-five million, four thousand, four hundred fifty-two".