55011400 has 48 divisors (see below), whose sum is σ = 133473600. Its totient is φ = 21046080.

The previous prime is 55011389. The next prime is 55011421. The reversal of 55011400 is 411055.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 1380 + ... + 10579.

It is an arithmetic number, because the mean of its divisors is an integer number (2780700).

Almost surely, 2^55011400 is an apocalyptic number.

55011400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55011400 is an abundant number, since it is smaller than the sum of its proper divisors (78462200).

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

55011400 is a wasteful number, since it uses less digits than its factorization.

55011400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11998 (or 11989 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 55011400 is about 7416.9670351162. The cubic root of 55011400 is about 380.3215192053.

Adding to 55011400 its reverse (411055), we get a palindrome (55422455).

The spelling of 55011400 in words is "fifty-five million, eleven thousand, four hundred".