55050400 has 36 divisors (see below), whose sum is σ = 134393742. Its totient is φ = 22019840.

The previous prime is 55050379. The next prime is 55050407. The reversal of 55050400 is 405055.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 53056656 + 1993744 = 7284^2 + 1412^2 .

It is not an unprimeable number, because it can be changed into a prime (55050407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33607 + ... + 35206.

Almost surely, 2^55050400 is an apocalyptic number.

55050400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55050400 is an abundant number, since it is smaller than the sum of its proper divisors (79343342).

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

55050400 is a wasteful number, since it uses less digits than its factorization.

55050400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68833 (or 68820 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 55050400 is about 7419.5956763155. The cubic root of 55050400 is about 380.4113735232.

Adding to 55050400 its reverse (405055), we get a palindrome (55455455).

The spelling of 55050400 in words is "fifty-five million, fifty thousand, four hundred".