55020203 has 4 divisors (see below), whose sum is σ = 62880240. Its totient is φ = 47160168.

The previous prime is 55020197. The next prime is 55020223. The reversal of 55020203 is 30202055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55020203 - 2⁶ = 55020139 is a prime.

It is a super-2 number, since 2×55020203² = 6054445476322418, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (55020223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3930008 + ... + 3930021.

It is an arithmetic number, because the mean of its divisors is an integer number (15720060).

Almost surely, 2^55020203 is an apocalyptic number.

55020203 is a deficient number, since it is larger than the sum of its proper divisors (7860037).

55020203 is an equidigital number, since it uses as much as digits as its factorization.

55020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860036.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55020203 is about 7417.5604480179. The cubic root of 55020203 is about 380.3418046477.

Adding to 55020203 its reverse (30202055), we get a palindrome (85222258).

The spelling of 55020203 in words is "fifty-five million, twenty thousand, two hundred three".