55147300 has 72 divisors (see below), whose sum is σ = 131241600. Its totient is φ = 19989120.

The previous prime is 55147289. The next prime is 55147321. The reversal of 55147300 is 374155.

55147300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 76341 + ... + 77059.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^55147300 is an apocalyptic number.

55147300 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 55147300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65620800).

55147300 is an abundant number, since it is smaller than the sum of its proper divisors (76094300).

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

55147300 is a wasteful number, since it uses less digits than its factorization.

55147300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 55147300 is about 7426.1228107270. The cubic root of 55147300 is about 380.6344433833.

The spelling of 55147300 in words is "fifty-five million, one hundred forty-seven thousand, three hundred".