55165404 has 96 divisors (see below), whose sum is σ = 152893440. Its totient is φ = 15155712.

The previous prime is 55165403. The next prime is 55165427. The reversal of 55165404 is 40456155.

55165404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351294 + ... + 351450.

It is an arithmetic number, because the mean of its divisors is an integer number (1592640).

Almost surely, 2^55165404 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 55165404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76446720).

55165404 is an abundant number, since it is smaller than the sum of its proper divisors (97728036).

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

55165404 is a wasteful number, since it uses less digits than its factorization.

55165404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55165404 is about 7427.3416509543. The cubic root of 55165404 is about 380.6760909468.

The spelling of 55165404 in words is "fifty-five million, one hundred sixty-five thousand, four hundred four".