55251300 has 144 divisors (see below), whose sum is σ = 178099712. Its totient is φ = 13132800.

The previous prime is 55251263. The next prime is 55251307. The reversal of 55251300 is 315255.

It is not an unprimeable number, because it can be changed into a prime (55251307) 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 47 ways as a sum of consecutive naturals, for example, 120672 + ... + 121128.

Almost surely, 2^55251300 is an apocalyptic number.

55251300 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 55251300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89049856).

55251300 is an abundant number, since it is smaller than the sum of its proper divisors (122848412).

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

55251300 is a wasteful number, since it uses less digits than its factorization.

55251300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 55251300 is about 7433.1218206081. The cubic root of 55251300 is about 380.8735673515.

Adding to 55251300 its reverse (315255), we get a palindrome (55566555).

The spelling of 55251300 in words is "fifty-five million, two hundred fifty-one thousand, three hundred".