55847400 has 96 divisors (see below), whose sum is σ = 197874240. Its totient is φ = 12764160.

The previous prime is 55847387. The next prime is 55847419. The reversal of 55847400 is 474855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2449 + ... + 10848.

It is an arithmetic number, because the mean of its divisors is an integer number (2061190).

Almost surely, 2^55847400 is an apocalyptic number.

55847400 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 55847400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98937120).

55847400 is an abundant number, since it is smaller than the sum of its proper divisors (142026840).

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

55847400 is a wasteful number, since it uses less digits than its factorization.

55847400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13323 (or 13314 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 55847400 is about 7473.1118016526. Note that the first 3 decimals coincide. The cubic root of 55847400 is about 382.2384045840.

The spelling of 55847400 in words is "fifty-five million, eight hundred forty-seven thousand, four hundred".