55195400 has 144 divisors (see below), whose sum is σ = 147044160. Its totient is φ = 19219200.

The previous prime is 55195369. The next prime is 55195403. The reversal of 55195400 is 459155.

It is not an unprimeable number, because it can be changed into a prime (55195403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 777365 + ... + 777435.

It is an arithmetic number, because the mean of its divisors is an integer number (1021140).

Almost surely, 2^55195400 is an apocalyptic number.

55195400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55195400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73522080).

55195400 is an abundant number, since it is smaller than the sum of its proper divisors (91848760).

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

55195400 is a wasteful number, since it uses less digits than its factorization.

55195400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55195400 is about 7429.3606723594. The cubic root of 55195400 is about 380.7450755530.

The spelling of 55195400 in words is "fifty-five million, one hundred ninety-five thousand, four hundred".