55878396 has 48 divisors (see below), whose sum is σ = 150425856. Its totient is φ = 15813504.

The previous prime is 55878391. The next prime is 55878397. The reversal of 55878396 is 69387855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55878391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5880 + ... + 12096.

It is an arithmetic number, because the mean of its divisors is an integer number (3133872).

Almost surely, 2^55878396 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 55878396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75212928).

55878396 is an abundant number, since it is smaller than the sum of its proper divisors (94547460).

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

55878396 is a wasteful number, since it uses less digits than its factorization.

55878396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338 (or 6336 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The square root of 55878396 is about 7475.1853488726. The cubic root of 55878396 is about 382.3091071912.

The spelling of 55878396 in words is "fifty-five million, eight hundred seventy-eight thousand, three hundred ninety-six".