20550033 has 24 divisors (see below), whose sum is σ = 34361600. Its totient is φ = 11591424.

The previous prime is 20550007. The next prime is 20550037. The reversal of 20550033 is 33005502.

It is not a de Polignac number, because 20550033 - 2⁹ = 20549521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20549988 and 20550015.

It is not an unprimeable number, because it can be changed into a prime (20550037) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2913 + ... + 7041.

Almost surely, 2^20550033 is an apocalyptic number.

It is an amenable number.

20550033 is a deficient number, since it is larger than the sum of its proper divisors (13811567).

20550033 is a wasteful number, since it uses less digits than its factorization.

20550033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221 (or 4218 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 20550033 is about 4533.2144224601. The cubic root of 20550033 is about 273.9076579802.

Adding to 20550033 its reverse (33005502), we get a palindrome (53555535).

The spelling of 20550033 in words is "twenty million, five hundred fifty thousand, thirty-three".