55511203 has 8 divisors (see below), whose sum is σ = 60824880. Its totient is φ = 50242080.

The previous prime is 55511189. The next prime is 55511207. The reversal of 55511203 is 30211555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55511203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55511207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8500 + ... + 13537.

It is an arithmetic number, because the mean of its divisors is an integer number (7603110).

Almost surely, 2^55511203 is an apocalyptic number.

55511203 is a deficient number, since it is larger than the sum of its proper divisors (5313677).

55511203 is a wasteful number, since it uses less digits than its factorization.

55511203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22277.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55511203 is about 7450.5840710645. The cubic root of 55511203 is about 381.4698451465.

Adding to 55511203 its reverse (30211555), we get a palindrome (85722758).

The spelling of 55511203 in words is "fifty-five million, five hundred eleven thousand, two hundred three".