55104378 has 64 divisors (see below), whose sum is σ = 135364608. Its totient is φ = 14595840.

The previous prime is 55104377. The next prime is 55104383. The reversal of 55104378 is 87340155.

It is not an unprimeable number, because it can be changed into a prime (55104373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50151 + ... + 51237.

It is an arithmetic number, because the mean of its divisors is an integer number (2115072).

Almost surely, 2^55104378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55104378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67682304).

55104378 is an abundant number, since it is smaller than the sum of its proper divisors (80260230).

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

55104378 is a wasteful number, since it uses less digits than its factorization.

55104378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 55104378 is about 7423.2323148343. The cubic root of 55104378 is about 380.5356665196.

The spelling of 55104378 in words is "fifty-five million, one hundred four thousand, three hundred seventy-eight".