55213300 has 36 divisors (see below), whose sum is σ = 120297856. Its totient is φ = 21996000.

The previous prime is 55213267. The next prime is 55213313. The reversal of 55213300 is 331255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27325 + ... + 29275.

Almost surely, 2^55213300 is an apocalyptic number.

55213300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55213300 is an abundant number, since it is smaller than the sum of its proper divisors (65084556).

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

55213300 is a wasteful number, since it uses less digits than its factorization.

55213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55213300 is about 7430.5652544070. The cubic root of 55213300 is about 380.7862299501.

Adding to 55213300 its reverse (331255), we get a palindrome (55544555).

The spelling of 55213300 in words is "fifty-five million, two hundred thirteen thousand, three hundred".