55178004 has 48 divisors (see below), whose sum is σ = 148030848. Its totient is φ = 15669888.

The previous prime is 55177979. The next prime is 55178009. The reversal of 55178004 is 40087155.

55178004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55178004² = 6089224250848032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55178009) 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 15 ways as a sum of consecutive naturals, for example, 12634 + ... + 16430.

It is an arithmetic number, because the mean of its divisors is an integer number (3083976).

Almost surely, 2^55178004 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 55178004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74015424).

55178004 is an abundant number, since it is smaller than the sum of its proper divisors (92852844).

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

55178004 is a wasteful number, since it uses less digits than its factorization.

55178004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55178004 is about 7428.1898198686. The cubic root of 55178004 is about 380.7050713902.

The spelling of 55178004 in words is "fifty-five million, one hundred seventy-eight thousand, four".