55280300 has 72 divisors (see below), whose sum is σ = 125044080. Its totient is φ = 21196800.

The previous prime is 55280299. The next prime is 55280317. The reversal of 55280300 is 308255.

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, 397631 + ... + 397769.

Almost surely, 2^55280300 is an apocalyptic number.

55280300 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 55280300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62522040).

55280300 is an abundant number, since it is smaller than the sum of its proper divisors (69763780).

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

55280300 is a wasteful number, since it uses less digits than its factorization.

55280300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55280300 is about 7435.0722928563. The cubic root of 55280300 is about 380.9401926408.

Adding to 55280300 its reverse (308255), we get a palindrome (55588555).

The spelling of 55280300 in words is "fifty-five million, two hundred eighty thousand, three hundred".