55031300 has 36 divisors (see below), whose sum is σ = 120145956. Its totient is φ = 21878400.

The previous prime is 55031287. The next prime is 55031309. The reversal of 55031300 is 313055.

It can be written as a sum of positive squares in 6 ways, for example, as 1331716 + 53699584 = 1154^2 + 7328^2 .

It is not an unprimeable number, because it can be changed into a prime (55031309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15710 + ... + 18890.

Almost surely, 2^55031300 is an apocalyptic number.

55031300 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 55031300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60072978).

55031300 is an abundant number, since it is smaller than the sum of its proper divisors (65114656).

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

55031300 is a wasteful number, since it uses less digits than its factorization.

55031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 55031300 is about 7418.3084325202. The cubic root of 55031300 is about 380.3673732513.

Adding to 55031300 its reverse (313055), we get a palindrome (55344355).

It can be divided in two parts, 5 and 5031300, that added together give a palindrome (5031305).

The spelling of 55031300 in words is "fifty-five million, thirty-one thousand, three hundred".