55220033 has 16 divisors (see below), whose sum is σ = 63510912. Its totient is φ = 47520000.

The previous prime is 55220003. The next prime is 55220059. The reversal of 55220033 is 33002255.

It is not a de Polignac number, because 55220033 - 2²⁰ = 54171457 is a prime.

It is a Curzon number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55219987 and 55220014.

It is not an unprimeable number, because it can be changed into a prime (55220003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24473 + ... + 26633.

It is an arithmetic number, because the mean of its divisors is an integer number (3969432).

Almost surely, 2^55220033 is an apocalyptic number.

It is an amenable number.

55220033 is a deficient number, since it is larger than the sum of its proper divisors (8290879).

55220033 is a wasteful number, since it uses less digits than its factorization.

55220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 55220033 is about 7431.0183016865. The cubic root of 55220033 is about 380.8017076791.

Adding to 55220033 its reverse (33002255), we get a palindrome (88222288).

The spelling of 55220033 in words is "fifty-five million, two hundred twenty thousand, thirty-three".