55251100 has 18 divisors (see below), whose sum is σ = 119895104. Its totient is φ = 22100400.

The previous prime is 55251089. The next prime is 55251113. The reversal of 55251100 is 115255.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 276156 + ... + 276355.

Almost surely, 2^55251100 is an apocalyptic number.

55251100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55251100 is an abundant number, since it is smaller than the sum of its proper divisors (64644004).

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

55251100 is a wasteful number, since it uses less digits than its factorization.

55251100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552525 (or 552518 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 55251100 is about 7433.1083672983. The cubic root of 55251100 is about 380.8731077858.

Adding to 55251100 its reverse (115255), we get a palindrome (55366355).

The spelling of 55251100 in words is "fifty-five million, two hundred fifty-one thousand, one hundred".