55013600 has 36 divisors (see below), whose sum is σ = 134303904. Its totient is φ = 22005120.

The previous prime is 55013599. The next prime is 55013611. The reversal of 55013600 is 631055.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33584 + ... + 35183.

It is an arithmetic number, because the mean of its divisors is an integer number (3730664).

Almost surely, 2^55013600 is an apocalyptic number.

55013600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55013600 is an abundant number, since it is smaller than the sum of its proper divisors (79290304).

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

55013600 is a wasteful number, since it uses less digits than its factorization.

55013600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68787 (or 68774 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55013600 is about 7417.1153422338. The cubic root of 55013600 is about 380.3265890404.

Adding to 55013600 its reverse (631055), we get a palindrome (55644655).

The spelling of 55013600 in words is "fifty-five million, thirteen thousand, six hundred".